Author Archives: GSD

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MGB RXIII accomplishes 2018 Geologic Quadrangle Mapping target

Geologic quadrangle mapping is one of the regular mandated functions of the Mines and Geosciences Bureau. It aims to produce updated reconnaissance geological maps of 1:50,000 scale. Each quadrangle map sheet covers a specific area of the Philippines which is about 48,600 hectares on the average. The index map showing the distribution of these quadrangle maps is maintained by the National Mapping and Resource Information Authority (NAMRIA). Under the quadrangle mapping activity, it is envisioned that the entire land area of the country will eventually have a geological map of 1:50,000 scale. The topographic map of each quadrangle sheet is printed and sold by NAMRIA. These topographic maps are used as base maps for the reconnaissance geological mapping.

In Caraga Region, there are 54 quadrangle sheets covering the entire region; of these, only 20 quadrangle sheets have published/unpublished geology while the rest are still to be mapped. The CY 2018 target of MGB RXIII which comprised five (5) quadrangle map sheets, namely three (3) quadrangle maps that partly cover the Siargao Group of Islands and two (2) quadrangle maps in Dinagat Islands, has been accomplished. Legwork was carried out in Siargao Island-covered quadrangle sheets in the first semester of 2018.

Quadrangle sheets covering Dinagat Group of Islands were selected as a target to align with the request of Province of Dinagat Islands to segregate a portion of land in the Municipality of San Jose from the Surigao Mineral Reservation for the development of a Government Center that will cater to the establishment of various government offices.

The reconnaissance geological mapping and verification of the Wilson and Dinagat Quadrangles was scheduled to be carried out in the second semester of CY 2018. For the Wilson Quadrangle map sheet, the area covered by ground verification during the period of August 6 until mid-September 2018 is around 25,000 hectares that include the islands/islets on the eastern part of the main landmass.

The geologic mapping activity continued on the northern part of Dinagat Quadrangle and was concluded in the middle part of October 2018 in areas covering the southern part of the quadrangle particularly the island barangays of Surigao City. Approximately, the total coverage of mapping is 15,000 hectares. The field mapping was carried out by the following personnel of the Geosciences Division: Noel G. Lumague, Supervising Geologist; Kate A. Boquilon, Senior Geologist; Janeth S. Aparri, Geologist; and Dionesio A. Surigao, Geologic Aide.

The drafting of geologic reports and map digitization are ongoing.

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MGB RXIII carries out Groundwater Resource Mapping and Assessment in Surigao City

In line with the National Groundwater Resource Mapping and Assessment Program of the DENR-Mines and Geosciences Bureau, a technical team from the Geosciences Division of MGB Regional Office No. XIII carried out the Groundwater Resource Mapping and Assessment from June 25 to July 4, 2018 in Surigao City. The said project was undertaken in coordination with the personnel from Surigao City Environment and Natural Resources Office, Surigao City Engineering Office and Surigao Metropolitan Water District.

Surigao del Norte is one of the target provinces of MGB RXIII for the said project this CY 2018. Earlier this year, the mapping project was conducted in other municipalities of Surigao del Norte which include Alegria, Bacuag, Burgos, Claver, Dapa, Del Carmen, General Luna, Gigaquit, Mainit, Pilar, Placer, San Benito, San Francisco, San Isidro, Santa Monica, Sison, Socorro, Tagana-an and Tubod.

The MGB RXIII technical team comprised Ms. Elaine L. Galido, Supervising Geologist; Ms. Liza T. Pacete and Mr. Beda Louie O. Cagampang, Senior Geologists; Mr. Ralph Angelo B. Plaza, Ms. Janeth S. Aparri, Ms. Rubenar L. Cagubcob and Ms. Mye Karla C. Semblante, Geologists II; Mr. Dionesio A. Surigao, Geologic Aide and Mr. Jaime L. Curada, GIS Operator.

 The said mapping and assessment project includes field mapping such as reconnaissance geological survey and inventory of water sources (wells, springs and impounded creeks and rivers if they are used as main water sources in some areas) and on-site water sample analysis using Aqua TROLL Multiparameter Instrument which is a water quality probe equipped with sensors for measuring dissolved oxygen, conductivity, temperature, pH, Oxidation-Reduction Potential (ORP) and depth (pressure). Secondary data on its water sources were also requested from Surigao Metropolitan Water District, a major water service provider in Surigao City.

This project aims to determine the groundwater availability in relation to the local geological setting, identify potential areas for future groundwater development and/or extraction and identify factors that may affect the water quality of the existing water supply in the target area.

The deliverables of this project include Groundwater Resource Assessment Report of the target province; Hydrogeological Map or Groundwater Availability Map showing the location of the mapped water sources all over the province and database on well, spring and water quality/chemistry.

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MGB RXIII conducts IEC Campaign on Results of Vulnerability and Risk Assessment Project and Training-Workshop on Understanding Risk Exposure Maps

The Mines and Geosciences Bureau Regional Office No. XIII conducted its Information, Education and Communication (IEC) Campaign on the Results of Vulnerability and Risk Assessment (VRA) Project and Training-Workshop on Understanding Risk Exposure Maps on June 28-29, 2018 in Butuan City and Buenavista, Province of Agusan del Norte.

Below are the pre-identified groupings of participants for discussions during the workshop.

The Mines and Geosciences Bureau Regional Office No. XIII conducted its Information, Education and Communication (IEC) Campaign on the Results of Vulnerability and Risk Assessment (VRA) Project and Training-Workshop on Understanding Risk Exposure Maps on June 28-29, 2018 in Butuan City and Buenavista, Province of Agusan del Norte.

Below are the pre-identified groupings of participants for discussions during the workshop.




Local DRRM

Local DRRM

Local DRRM

Local PDO

Local PDO

Local PDO



City/Municipal Engineer

Health Officer



Local Council Member

City/Municipal LGOO

City/Municipal LGOO

Local Gender Development Officer

Local Council Member

Local Council Member

Local IP Representative

Local Budget Officer

ABC President






The main purpose of the IEC was to intensify awareness and provide additional technical input to the Local Government Unit (LGU) regarding Risk Exposure Analysis and its significance to its comprehensive land use and development disaster risk management planning.

The following were the topics discussed by MGB RXIII geologists, to wit:




a.  Understanding Susceptibility Maps

Vernie A. Nonato
Geologist II

Vernie A. Nonato
Geologist II

b. Introduction to VRA

Liza T. Pacete
Senior Geologist

Liza T. Pacete
Senior Geologist

c. Production of Exposure Maps

Janette S. Aparri
Geologist II

Janette S. Aparri
Geologist II

d. Understanding the Risk Exposure Maps

Melvin A. Mantilla Supervising Geologist

Kate A. Boquilon
Senior Geologist

After each presentation, questions from the participants were entertained. Guide questions for the Workshop /Round Table discussions were given to all participants who were grouped accordingly.  After the group discussion, a member was chosen to report their output.

The VRA Technical Reports and two (2) sets of Risk Exposure maps were turned over to the LGU during the activity.  On the same note, the MGB RXIII IEC VRA team distributed Information, Education and Communication (IEC) materials regarding landslide, flood, ground subsidence and other geologic hazards.  Apart from intensifying public awareness of natural hazards, the said materials will also aid in the effective and efficient management of disasters and reduction of casualties and damages to lives and properties.

The Office acknowledged the support given by the Provincial Disaster Risk Reduction Management Officer (PDRRMO) of Agusan del Norte, City Mayor/City Administrator of Butuan City and Municipal Mayor /Administrator of Buenavista, Agusan del Norte and City/Municipal Disaster Risk Reduction Management Officer (C/MDRRMO) during the successful conduct of the MGB RXIII Information, Education and Communication (IEC) Campaign.

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MGB RXIII takes part in 2018 Sylvatrop Writing Workshop

The Mines and Geosciences Bureau Regional Office No. XIII took part in the 2018 Sylvatrop Writing Workshop on June 19-22, 2018 at the Orchid Garden Suites in Malate, Manila. The workshop was organized by the DENR-Ecosystems Research and Development Bureau (ERDB).

Sylvatrop is the technical journal of Philippine Ecosystems and Natural Resources.  It is a medium of information exchange on scientific, technological and descriptive articles, research notes and reviews of technical literatures on ecosystems and natural resources topics. The journal is published once a year and has produced more than 480 articles on environment and natural resources since 1976.

It is noteworthy that Sylvatrop is an Institute for Scientific Information (ISI)-indexed journal that is being abstracted by Abstract Bibliography of Tropical Forestry (Philippines); Documentation Centre on Tropical Forestry (Philippines); Forestry Abstract (Oxford, UK); Chemical Abstracts (Ohio, USA) and Asia Science Research Reference (India).  On the same note, it is accredited by the Philippine Commission on Higher Education and is one of the 28 out of the 777 Philippine journals that are listed in the Thomson Reuters Master List.

The writing workshop aimed to train authors of 35 potential articles from all DENR bureaus and offices across the country.  Ms. Kate A. Boquilon, MGB RXIII Senior Geologist, is one of the privileged participants in the said workshop.

The event started with a program wherein Dr. Sofio B. Quintana, ERDB Director and Executive Adviser of Sylvatrop Editorial Board (SEB), delivered the opening remarks.  It was followed by the Presentation of Workshop Mechanics as well as introduction of SEB, participants and resource speakers by Ms. Liberty E. Asis, ERDB Technology Transfer OIC-Chief and Alternate Representative of SEB.

Speakers for the 1st day of the workshop were Dr. Maybellyn Zepeda, MGB Alternate Representative of SEB, who discussed the importance of scientific publishing; Dr. Bighani M. Manipula, SEB Chair and ERDB Assistant Director, who talked about the history of Sylvatrop and its publication process; and Dr. Jose Alan A. Castillo, Senior Science Research Specialist and ERDB Permanent SEB Representative, who discussed about different types of journal articles, writing and developing the Introduction and Review of Literature. For the workshop proper, the participants took a pretest and proceeded to writing the Introduction and Review of Literature for the manuscript of their respective studies.

On the 2nd day of the workshop, Dr. Castillo discussed the important points in writing the Methods and Results and Discussion. While on the 3rd day, he discussed about writing the Abstract. The writing of manuscripts was done after every discussion of the speaker. Ms. Melanie N. Ojeda, Sylvatrop Editorial Assistant and Secretariat, presented the Sylvatrop style and format. On the other hand, Ms. Adreana Santos-Remo shared quick tips and techniques for publishing the journal article. The participants’ draft manuscripts were submitted at the end of the 3rd day.

On the last day of the workshop, the participants and the organizers gave their impressions on the activity and shared the lessons and experiences they have gained from it. There was also an awarding of certificates and special awards. Dr. Manipula officially concluded the workshop with closing remarks in which he expressed his gratitude for the keen involvement of the participants. He also commended the participants for having completed the 2018 DENR Sylvatrop Writing Workshop.

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MGB RXIII chemists rise to the challenges of 33rd Philippine Chemistry Congress

Rising to Challenges (RCh) is the theme of the 33rd Philippine Chemistry Congress which was held on May 30-June 1, 2018 at the Philippine International Convention Center in Roxas Boulevard, Manila. The theme is not only a fitting abbreviation for registered chemists (RCh) but it intrinsically expresses the spirit of the present-day chemistry community that uses chemistry as a key to unlock the solutions to many challenges. Two chemists from the Mines and Geosciences Bureau Regional Office No. XIII joined over a thousand professionals, participants, researchers and paper presenters from the chemical industry and the academe as well as policymakers and leaders from government partner institutions in the annual gathering of chemists which has been in existence for thirty-three years.

Esteemed guest speakers highlighted the topics on chemical security, efficient regulation of chemicals of concern, laboratory accreditation, environmental chemical regulations, water analysis and the chemicals weapons convention. Discussions and paper presentations revolved around the role of the chemical industry in pushing innovations that can sustain economic growth, stimulating research and development agenda in close collaboration with the academe and defining more targeted interventions in order to sustain momentum of economic resurgence.

With the passage of the Chemistry Law (RA 10657), chemical laboratories are now seeking accreditation, debutante laboratory technicians are getting licensed and the academe has its hands full in the preparations for the soon-to-be implemented post K-12 Chemistry Curriculum. This also remains the biggest challenge for MGB chemical laboratories along with their compliance with stringent requirements to secure the necessary permits and their ability to sustain high quality standards in the delivery of reliable and accurate laboratory services.

At the end of the congress, the directions for the development of chemistry in the Philippines was discussed by Dr. William G. Padolina, current President of the National Academy of Science and Technology and former Secretary of the Department of Science and Technology. Discussants included representatives from the Professional Regulation Commission, chemical industry, higher education, research group and the K-12/STEM program of the Department of Education. Some of the proposed roadmaps are the acceleration of the development and retention of a critical mass of Filipino talents in chemistry and the enhancement of the transformative role of chemistry as a catalyst for change in steering the nation towards resilience and prosperity.

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MGB RXIII carries out Groundwater Resource Mapping and Assessment on Siargao Islands

The Mines and Geosciences Bureau Regional Office No. XIII carried out the Groundwater Resource Mapping and Assessment in the Municipalities of General Luna and San Benito, Siargao Islands, Province of Surigao del Norte on April 18 to May 5, 2018.

The said assessment was conducted by a team of geologists, cartographer and on-the-job trainees from Negros Oriental State University.

The activity aims to establish the geology of the area and determine the general groundwater resource potential of the different lithologic units. It also aims to assess the vulnerability factors that could affect the water quality of the existing water supply sources in the study area and to identify possible areas for development and future extraction.

As for the mapping aspect of the activity, it was composed of an inventory of the existing groundwater resources (e.g. springs and wells) of each barangay within the municipality; identification of the lithologic unit and the overall geomorphologic characteristic of the groundwater locale; and in situ determination of the basic water chemistry of the groundwater.

For 2018, the MGB RXIII targets for the Groundwater Resource Mapping and Assessment are the Provinces of Surigao del Norte and Agusan del Sur.

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MGB RXIII conducts Vulnerability and Risk Assessment in Surigao del Sur

The Mines and Geosciences Bureau Regional Office No. XIII conducted the Vulnerability and Risk Assessment (VRA) on April 16 to 30, 2018 in the Municipalities of Marihatag, Cagwait and Bayabas, Province of Surigao del Sur.

The said assessment was conducted by a team of geologists and an on-the-job trainee from Negros Oriental State University. The team formed two groups that were assigned in every barangay to perform geotagging in order to tag the essential landmarks such as barangay halls, health centers, schools, multi-purpose buildings, purok centers and other establishments per purok, district or sitio in all barangays of the aforementioned municipalities. The purpose of tagging landmarks or establishments is to get their exact global positioning system (GPS) coordinates and plot them on the map. Moreover, building materials and road networks were noted for data gathering. The threat of any hazard or element of risk to landslide or flooding within those establishments was also verified. Interviews with some residents in the area were also made to note the scenario and details of any disaster they have experienced so as to update the geohazard maps generated by MGB RXIII.

All the municipalities were assessed and the elements at risk identified.  Similarly, the team took note of every road’s status (concrete or non-concrete) and building materials (light or concrete). The areas where flooding and landslide susceptibility occurs (rated from low, moderate, high and very high) were also observed.

The outputs of the VRA are technical reports and Risk Maps that incorporate the population, roads and infrastructures at risk of the said hazards. These reports and maps will essentially assist the Local Government Units in their planning and pre-disaster risk activities.

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MGB conducts Training Course on Measurement and Internal Quality Control in the Analytical Laboratory

The Lands Geological Survey Division of the Mines and Geosciences Bureau Central Office conducted a Training Course on Measurement of Uncertainty and Internal Quality Control in the Analytical Laboratory with the theme “Enhancing Capabilities and Bridging Gaps Towards Effective Laboratory Performance” on April 10-14, 2018 at the Greenhills Elan Hotel in San Juan, Metro Manila.

The said activity was participated by representatives from the Lands Geological Survey Division and Metallurgical Technology Division of MGB Central Office as well as Regional Offices with Analytical Laboratory including Cordillera Administrative Region (CAR), MGB Calabarzon, Regions V, VII and XIII. Region XII also participated in preparation for their forthcoming laboratory operation. Two laboratory personnel from MGB Regional Office No. XIII Geosciences Division took part in the training course.

The activity started with the Opening Remarks delivered by Mr. Antonio N. Apostol, Jr., OIC of LGSD, followed by Ms. Jocelyn C. Villanueva, Chief of Geological Laboratory Services Section who gave the Overview of the Training Course. Engr. Juancho Pablo S. Calvez, Chief of Metallurgical Technology Division, gave an Inspirational Talk.  Mr. Admer Rey C. Dabilo, Senior Science Research Specialist from the Standard and Testing Division, Industrial Technology Development Institute, Department of Science and Technology, was the Resource Speaker. The topics tackled during Day One were the  following: Introduction to Measurement of Uncertainty and Reliable Test Result in Analytical Chemistry;  The Basic Concepts of Errors in Measurement and Measurement Uncertainty (MU); Principles for Estimating the MU of the Analytical Test Result and Guide to Uncertainty Measurement (GUM) Principle.

On the second day of the training course, Mr. Dabilo continued with the discussions about Alternative sources for starting MU on Analytical Results and decision making based on the results with a given uncertainty; Measurement Uncertainty and Method Validation; Computation of Uncertainty from Certified Reference Material and Proficiency Testing; Introduction to Analytical Chemistry and the Need for Quality Control and Statistical tools needed for Dealing with Quality Control.  After all the topics were discussed, Catching Up/Summary of remaining issues were entertained.

On the third day, Mr. Dabilo continued with the remaining topics which included the Basic Concepts in Statistically-based Quality Control and Establishment of Quality Control Chart; Evaluating Control Data on both Short-Term and Long-Term Use of Decision Rules; Preparation of In-house Reference Materials and Conduct of Homogeneity Test.

The fourth day of the training course was devoted to the Workshop on topics discussed during the three-day lecture.  The Central and Regional Offices were required to bring a laptop with installed MS Excel Program with Data Analysis Toolpak for hands-on computation purposes.

The last day of the training course was all about organizational concerns. Each Regional Offices and Central Office prepared a PowerPoint Presentation on the Updates of their Laboratory Operations and Application for Permit to Operate Chemical Laboratories.  The Chemical Laboratory Service Section of Metallurgical Technology Division of MGB Central Office, CAR and Region XIII also gave their Updates on the Application for ISO 17025:2017 The Standard for Laboratory Competence.

The training course concluded with the closing remarks of Ms. Josephine R. Uyaco, Chief of Geological Laboratory Services Section, in which she expressed her gratitude to the management for the support given to make the training a complete success. She also expressed her appreciation for the participants and the resource speakers.

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MGB conducts 2018 Geoscience Workshop

The Mines and Geoscience Bureau conducted the 2018 Geoscience Workshop on February 1 to 7, 2018 at Patio de San Jose Resort and Convention Center in Malilipot, Albay.

The workshop was jointly organized by MGB Central Office and MGB Regional Office No. V.  It was attended by key personnel from the Lands Geological Survey Division of MGB Central Office, technical and support staff from MGB RV as the host region, and six geologists from each of the Regional Offices.

Geosciences Division Chief Romeo Dalodado; Supervising Geologists Melvin Mantilla and Elaine Galido; Senior Geologists Liza Pacete and Beda Louie Cagampang; and Geologist II Ralph Angelo Plaza represented MGB Regional Office No. XIII in the workshop.

The main focus of the activity are as follows:

  1. Reporting of the MGB Central and Regional Offices status of accomplishments on the major programs of MGB for 2017 particularly the Geologic Quadrangle Mapping carried out in Regions V (Bicol Region) and IV A (CALABARZON), Vulnerability and Risk Assessment, Groundwater Resource and Vulnerability Assessment, Mineral Reservation, Ground Subsidence Hazard Assessment and IEC on 10K Geohazard Maps;
  2. Merging and consolidation of the Geologic Quadrangle Maps generated by each region with the targets of the neighboring quadrangles generated by other regions;
  3. Discussion on standardization of ArcGIS-generated map symbols, color schemes, attributes and databases;
  4. Methodologies and standardization of presentation templates and forms for the IEC on VRA activities for 2018;
  5. Issues in the implementation of the above-stated various programs and concerns on laboratory matters; and
  6. Finalization of target areas, province and/or municipalities/cities for 2018.

Accomplishments for MGB RXIII were presented by Liza Pacete for the Geologic Quadrangle Mapping and Ground Subsidence Hazard Assessment; Melvin Mantilla for the Vulnerability and Risk Assessment; Elaine Galido for the Groundwater Resource and Vulnerability Assessment and Romeo Dalodado for the Mineral Reservation Program. Liza Pacete, Melvin Mantilla, Beda Louie Cagampang and Ralph Angelo Plaza also actively participated in the seamless integration of the region’s geologic quadrangle map outputs in Region V with the boundary quadrangle maps generated by other Regional Offices.

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MGB conducts Strategic Planning for Marine Geological Survey and Research

The Marine Geological Survey Division (MGSD) of the Mines and Geosciences Bureau Central Office conducted a Seminar-Workshop on Strategic Planning for Marine Geological Survey and Research on January 22-26, 2018 at the Bali Village Hotel Resort in Tagaytay City.

The said activity was participated by representatives of all Regional Offices. Two geologists from MGB Regional Office No. XIII Geosciences Division took part in the seminar-workshop.

The activity started with a program wherein Engr. Glenn Marcelo C. Noble, Chief of Planning, Policy and International Affairs Division of MGB Central Office, delivered his opening remarks followed by the discussion of Philippine Development Plan (PDP), General Appropriations Act (GAA), Program Expenditure Classification (PRExC) and National Expenditure Program (NEP).

On the second day of the seminar-workshop, the discussion was about Project Life Cycle. Engr. Noble explained the stages of a project from Situation Analysis Stage all through the end stage which is the Project Impact Evaluation Stage. The discussion of the Rationale, Accomplishments, Plans and Ways Forward of the Coastal Geohazard Assessment Project as well as other projects and research such as the Offshore Exploration of the Philippine Rise was tackled on the third day of the seminar-workshop. Ms. Eloisa L. Legaspi, Chief of Finance Management Division of MGB Central Office discussed about Financial Considerations and Concerns. On the last day of the activity, there was a finalization of the 2019 Project Proposals of MGSD and ROs. The MGB Central Office will pilot the reassessment of high erosion and high accretion coastlines of 20 different municipalities in the country which will start in 2019. Regional Offices will follow the standardized activity in 2020 until 2023. The programming for the RPS Explorer and Marine Geodatabase was discussed among the CO participants.

The seminar-workshop concluded with closing remarks from Dr. Yolanda M. Aguilar, Chief-OIC of Marine Geological Survey Division, in which she expressed her gratitude for the cooperation and sharing of ideas among the participants for the strategic planning for Marine Geological Survey and Research.

Secretary Corner

Director Corner



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Surigao City Weather…

Chance of a Thunderstorm
Bukas 01/24 40%
High 29° / Low 24°
Chance of a Thunderstorm
Pagkulog at pagkidlat na mamumuo sa hapon. Mataas 29celsius. ENE na hangin sa 15 hanggang 25 kilometro kada oras. Uulan 40%.
Biyenes 01/25 80%
High 28° / Low 24°
Mga Pagkulog at Pagkidlat . Mataas 28celsius. NE na hangin sa 15 hanggang 25 kilometro kada oras. Uulan 80%.

Pusong MINERO (Quake Crises)

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