Field Forum 2025:
The Geology of Cuba: Key for the Tectonic Evolution of the Caribbean–North American Plates

Cuba | 12–18 April 2025

In collaboration with   Site under construction


IMPORTANT: General Info for visitors to Cuba

> See itinerary.

> Download TFF2025_FieldGuide (download a version without photos, 35 pages).

> Check list of selected references.

Also, see the associated session "Geology and Geodynamic Evolution of Cuba and the Caribbean" in Geosciences 25, Havana.

 


Below. Valle de Viñales, Pinar del Río Province, Western Cuba. Karstic relief on passive margin Upper Jurassic and Cretaceous limestones. The world-famous Cuban tobacco is grown in this valley. Cover of GSA Today, Volume 26, Number 10 (October 2016).

Field trip guides

Yamirka Rojas-Agramonte, Heidelberg University, Germany (yamirka.rojas@geow.uni-heidelberg.de).
Manuel Antonio Iturralde-Vinent, Empresa de Tecnologías de la Información y Servicios Telemáticos Avanzados (CITMATEL), Cuba (maivcu@gmail.com).
Antonio Garcia-Casco, University of Granada, Spain (agcasco@ugr.es).
Kenya Núñez-Cambra, Insituto de Geología y Paleontología, Cuba, and President of the Cuban Geological Society (kelvira62@gmail.com).
Haoyu Hu, Heidelberg University, Germany (haoyuhu@asu.edu).

Agenda

The seven-day Thompson Field Forum will begin in Havana, Cuba, and then travel to Pinar del Rio in western Cuba. For the first two days, the group will visit localities around Viñales (a UNESCO World Heritage Site). The group will then move to central Cuba for a traverse across the Cuban orogenic belt, spending three nights in Santa Clara and one in Trinidad (another UNESCO World Heritage Site and one of the best-preserved colonial cities in the Caribbean).

April is typically dry, with temperatures ranging from 26-32°C. No special fitness is required, and outcrops will be easily accessible from the road.


Cuban Geology

For an overview of Cuban geology, take a look at: Iturralde-Vinent, M.A., Garcia-Casco, A., Rojas-Agramonte, Y., Proenza, J.A., Murphy, J.B. and R.J. Stern (2016). The geology of Cuba: A brief overview and synthesis. GSA Today 26, 10, 4-10. DOI: 10.1130/GSATG296A.1.

The Earth Sciences literature on Cuba is full of papers published in sources that are not easily found, neither in libraries nor in internet. However, Yasmani Ceballos Izquierdo and Manuel Iturralde-Vinent have gathered since 2011 thousands of papers that are offered in pdf format in the "Biblioteca Digital Cubana de Geociencias", which is frequently actualized. Click here for inspection.

See list of selected references relevant for TFF 2025 Cuba.


Below. A) Tectonic map of the northern Caribbean region. B) Generalized geologic-tectonic map of Cuba modified from Iturralde-Vinent et al. (2016) with indication of field areas.

Below: Geological map of Cuba (1:250000) with indications of field areas. Click here for a high-resolution version. Click here for legend.


Click below for daily details of the trip and photographs of the outcrops at the stops.

It should be noted that the selection of the outcrops has been conditioned by several criteria, including a) transportation on a big bus for 40 persons, b) accessibility (close to roads) and, importantly, c) road safety in a context of small roads with heavy traffic.

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[TFF2025Cuba » April 13]
[TFF2025Cuba » April 14]
[TFF2025Cuba » April 15]
[TFF2025Cuba » April 16]
[TFF2025Cuba » April 17]
[TFF2025Cuba » April 18]


Day 1, April 12. Leaving Havana convention Center at 8.00 AM and transfer to Viñales (Pinar del Rio) along the Havana-Pinar Highway. Western Cuba. Guaniguanico terrane (Mesozoic passive margin sequences).

April 12, stop 1. Parador las Barrigonas. 22°30'25.08"N, 83°27'16.43"W. See on 1:250K geologic mapSee on geologic sketch map. See on Google Maps.

April 12, stop 2. Viñales Geopark visitors center. 22°35'48.30"N, 83°43'10.99"W. Overview of the Viñales valley and general geology and geomorphology of the region. See on 1:250K geologic mapSee on geologic sketch map. See on Google Maps.

April 12, stop 3. Puerta de Ancón scenic view. 22°38'31.86"N, 83°42'43.97"W.  Late Jurassic Jagua Fm and San Vicente member of the Guasasa Fm. See on 1:250K geologic mapSee on geologic sketch map. See on Google Maps. See on stratigraphic chart.

April 12, stop 4. Palenque Cave area. 22°39'14.14"N, 83°42'55.60"W. Jurassic limestones. See on 1:250K geologic mapSee on geologic sketch map. See on Google Maps. See on stratigraphic chart.

April 12, stop 5. El Indio Cave parking area. 22°40'15.53"N, 83°42'27.24"W. Jurassic-Cretaceous section. See on 1:250K geologic mapSee on geologic sketch map. See on Google Maps. See on stratigraphic chart.

April 12, stop 6. Km 13 of the Viñales-La Palma road. 22°43'13.47"N, 83°39'27.44"W. San Cayetano sandstones and shales (Lower? To Upper Jurassic early Oxfordian). See on 1:250K geologic mapSee on geologic sketch map. See on Google Maps. See on stratigraphic chart.


Day 2, April 13. Western Cuba. Guaniguanico terrane (Mesozoic passive margin sequences).

April 13, stop 7. Prehistoric Mural and Viñales Stonehenge. 22°37'7.59"N, 83°44'20.80"W. Scenic views. See on 1:250K geologic mapSee on geologic sketch map. See on Google Maps.

April 13, stop 8. Entronque Moncada section. 22°33'14.21"N, 83°50'42.66"W. K-Pg boundary. See on 1:250K geologic mapSee on geologic sketch map. See on Google Maps.

April 13, stop 9. Manacas Formation. 22°34'58.47"N, 83°48'6.93"W. See on 1:250K geologic mapSee on geologic sketch map. See on Google Maps.

April 13, stop 10. Ichthyosaur Cave. 22°36'30.02"N, 83°45'41.94"W. See on 1:250K geologic mapSee on geologic sketch map. See on Google Maps.


Day 3, April 14. Leaving Pinar del Rio to Santa Clara, arriving at 2.00 pm. Central Cuba. Sedimentary sequences of the Mesozoic passive Bahamian margin and ophiolites.

April 14, stop 11. Santa Clara airport-Minerva road. 22°29'54.95"N, 79°53'14.13"W. Sediments of the Bahamian borderland. See on 1:250K geologic mapSee on geologic sketch map. See on Google Maps.

April 14, stop 12. Santa Clara airport-Minerva road. 22°28'58.23"N, 79°50'42.10"W. Serpentinite mélange with blocks of veined amphibolitized eclogite. See on 1:250K geologic mapSee on geologic sketch map. See on Google Maps.

April 14, stop 13. Santa Clara airport-Minerva road. 22°28'4.55"N, 79°49'26.84"W. Serpentinite mélange with tectonized low-P mafic intrusives (amphibolite). See on 1:250K geologic mapSee on geologic sketch map. See on Google Maps.


Day 4, April 15. Central Cuba. Ophiolites and high-pressure serpentinite-matrix mélange.

April 15, stop 14. Santa Clara-Placetas road. 22°19'49.99"N, 79°42'55.71"W. Banded gabbros of the oceanic lower crust, underlying serpentinized peridotites and late intrusive diabases. See on 1:250K geologic mapSee on geologic sketch map. See on Google Maps.

April 15, stop 15. Santa Clara-Placetas road. Pelo Malo Quarry. 22°23'25.89"N, 79°52'9.04"W. Ophiolite mélange. Megablock of HP foliated (±dolomite) antigoritite sorrounded by "normal" (regional) serpentinte. See on 1:250K geologic mapSee on geologic sketch map. See on Google Maps.

April 15, stop 16. Santa Clara-Encrucijada road road. Las Delicias. 22°32'21.98"N, 79°54'18.89"W. Ophiolitic mélange. Eclogite blocks within serpentinite. See on 1:250K geologic mapSee on geologic sketch map. See on Google Maps.


Day 5, April 16. Central Cuba. Cretaceous volcanic arc (from youngest to oldest formations).

April 16, stop 17. Hilario Formation. 22°19'13.05"N, 79°57'57.72"W. See on 1:250K geologic mapSee on geologic sketch map. See on Google Maps. See on stratigraphic chart.

April 16, stop 18. Brujas Formation. 22°17'33.83"N 79°59'6.04"W. See on 1:250K geologic mapSee on geologic sketch map. See on Google Maps. See on stratigraphic chart.

April 16, stop 19. Mataguá Formation. 22°12'48.69"N, 79°59'29.74"W. See on 1:250K geologic mapSee on geologic sketch map. See on Google Maps. See on stratigraphic chart.

April 16, stop 20. Los Pasos Formation. 22°10'35.21"N, 79°58'42.06"W. See on 1:250K geologic mapSee on geologic sketch map. See on Google Maps. See on stratigraphic chart.


Day 6, April 17. Central Cuba. Low-to-intermediate pressure arc-related Mabujina Amphibolite Complex (MAC) below the Cretaceous arc, plutonic rocks of the Manicaragua batholith and subducted Mesozoic passive margin of the Escambray Complex below the MAC.

April 17, stop 21. Agabama River. 22° 2'49.20"N, 79°50'36.01"W. Amphibolite of the Mabujina Complex. See on 1:250K geologic mapSee on geologic sketch map. See on Google Maps. See age relation to stratigraphy of the Cretaceous volcanic arc.

April 17, stop 22. Agabama River. 22° 4'0.77"N, 79°47'39.89"W. Amphibolite and granitic rocks of the Mabujina Complex. See on 1:250K geologic mapSee on geologic sketch map. See on Google Maps. See age relation to stratigraphy of the Cretaceous volcanic arc.

April 17, stop 23. Carbonates of Boquerones lithodeme (Upper Jurassic) of the Escambray Complex. See on map. See on sketch map. See on Google Maps. See on stratigraphic chart.

April 17, stop 24. Güinia de Miranda-Trinidad road. El Algarrobo village. 21°58'29.50"N, 79°52'42.77"W. Graphitic schists and muscovite+calcite-bearing schists of the Loma La Gloria lithodeme (Jurassic) of the Escambray Complex. See on map. See on sketch map. See on Google Maps. See on stratigraphic chart.

April 17, stop 25.  Güinia de Miranda-Trinidad road. 21°54'10.23"N, 79°51'27.00"W. Muscovite+calcite±graphite schists of the Cobrito lithodeme (Upper Jurassic-Lower Cretaceous) of the Escambray Complex. See on map. See on sketch map. See on Google Maps. See on stratigraphic chart.


Day 7, April 18. Farewell and back to Havana.