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  • Erizza Rose Santos

Geol 154 (Volcanology) fieldwork in Rizal, Laguna, and Batangas

The Geology 154 (Volcanology) THY class under Dr. Sandra G. Catane conducted fieldwork on 19-21 May 2023 which aims to apply the concepts and theories of volcanology in the field, particularly in the interpretation of volcanic processes by analyzing volcanic landforms and deposits. The academic field activity focused on exposing the students to landforms and deposits of different volcanic systems: the Rizal ignimbrites associated with the Laguna caldera; the maars, cones, and domes of the San Pablo volcanic field; and the pyroclastic deposits of the Taal Volcano.

Students observed and described the deposits of a monogenetic cone exposed by an old quarry in Calauan, Laguna.


The students were able to observe and characterize the outcrops, construct a stratigraphic log of volcanic deposits, and analyze the geomorphology of different volcanic landforms. Discussions on the interpretations of the volcanic processes were also done to strengthen the students’ understanding of the concepts taught in class. A total of 15 stops were made during the fieldwork.

In groups, students were able to construct stratigraphic logs of different portions of the outcrop in Carmona, Cavite.


A few stops of the field activity were dedicated to cultural appreciation which included the Angono Petroglyphs in Angono, Rizal, and the Old Taal Church Ruins in San Nicolas, Batangas.

The class at the entrance of the Angono-Binangonan Petroglyphs Site in Rizal (left) and outside the Old Taal Church Ruins in Batangas (right).

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