• Vol 40 No 3 (2023)

    North panoramic view of the Citlaltépetl (Pico de Orizaba) volcano. The volcanic edifice shows some irregularities on its flanks, which represent the remnants of the ancient cones on both flanks, on which the present cone was built. This is the highest North American volcano (5685 m a.s.l.), still active with the only glacier preserved in Mexico. See the related article in this issue; photograph courtesy of the author: Gerardo Carrasco-Núñez.

  • Vol 40 No 2 (2023)

    Comparison of the humerus distal end of two bears: a fossil Agriotherium and a recent Ursus Maritimus. On left, Agriotherium (MPGJ 5676) from Juchipila basin, Zacatecas Mexico, early-late Hemphillian age; the medial epicondyle is convex, the external epicondylar ridge has a thick rim with two deep grooves in the middle. On right, Ursus maritimus with a long hook-shaped medial condyle important in retaining prey for feeding. The lateral epicondylar ridge is concave deep throughout its length. See the related paper by Carranza-Castañeda and Wang in this issue.

  • Vol 40 No 1 (2023)

    Lahar in the Montegrande ravine, Volcán de Colima, real-time monitoring image from station of the Centro de Geociencias de la Universidad Nacional Autónoma de México, date 2018-10-03, GMT 23:53:55. See the related article by Martínez-Valdés et al. in this issue.

  • Vol 39 No 3 (2022)

    Longitudinal thin section of the new coral species Rayaphyllia atheca, holotype IGM 9204. 1, from the San Juan Raya Formation (Lower Cretaceous), Puebla, Mexico. Scale bar = 1 mm. See related article by Hannes Löser in this issue.

  • Vol 39 No 2 (2022)

    Intermediate-depth seismicity in southern Mexico. The orange symbols represent earthquakes with depths between 50 and 10 km, while the yellow ones are earthquakes with depths greater than 100 km. In this area, hypocentral depths never exceed 300 km. Also, notice that in the westernmost part of the map, the seismicity no longer follows the pattern of being perpendicular to the trench. See related article by Guzmán-Speziale in the special section of this issue.

  • Revista Mexicana de Ciencias Geológicas, vol. 39, núm. 1, abril 2022 Vol 39 No 1 (2022)

    Stalagmites collapsed by an earthquake in the San Jerónimo underground river, inside the Cacahuamilpa Grottoes, Taxco, Guerrero, Mexico. At the center of the photograph is Dr. Víctor Hugo Garduño-Monroy, in whose memory the third and last part of the Special Section “The Geology of Michoacán” is published in this issue.

  • Vol 38 No 3 (2021)

    Cover image:

    Clastic deposits covering volcanic deposits of the Aguajito Caldera, Baja California Sur, Mexico. V´íctor Hugo Garduño-Monroy at the center of the image.


    Special Section guest editors:

    Isabel Israde-Alcántara and José Luis Macías

  • Vol 38 No 2 (2021)

    Cover image

    View of a trench performed on the Jarácuaro paleo island, south west margin of Patzcuaro lake, showing lacustrine sediments (diatomites and clays) interlayered with volcanic deposits. Different deformation phases are recorded as result of phenomena of  uplifting and landslides of volcanic edifices as well of active faulting associate with the E-W regional fault system. This image justify the importance of the studies carried out by Víctor Hugo Garduño Monroy (on the right) to understand this factors in the lacustrine basin evolution and paleoenvironmental reconstruction in Mexico. To the left, Miguel Rodríguez Pascua.

1 - 25 of 104 items 1 2 3 4 5 6 > >>