A5017937542- Paleontology and Stratigraphy of Fossils
- Geological and Geochemical Analysis
- Geology and Paleoclimatology Research
- earthquake and tectonic studies
- Geological and Tectonic Studies in Latin America
- Geological and Geophysical Studies
- Botany and Geology in Latin America and Caribbean
- Geological formations and processes
- Hydrocarbon exploration and reservoir analysis
- Geological Formations and Processes Exploration
- Geological Studies and Exploration
- High-pressure geophysics and materials
- Geochemistry and Elemental Analysis
- Geochemistry and Geologic Mapping
- Geological and Geophysical Studies Worldwide
- Reservoir Engineering and Simulation Methods
- Methane Hydrates and Related Phenomena
- Evolution and Paleontology Studies
- Drilling and Well Engineering
- Marine and environmental studies
- Plant Diversity and Evolution
- Paleontology and Evolutionary Biology
- Hydraulic Fracturing and Reservoir Analysis
- Marine Biology and Ecology Research
- Analytical Chemistry and Sensors
University of Lausanne
2014-2025
Laboratoire de Sciences de la Terre
2006
Terre des Hommes
2002
University College London
1992
University of Basel
1985
Geological Institute
1985
Universidad de Costa Rica
1983-1984
Scripps Institution of Oceanography
1982
The catalogue of Mesozoic radiolarian genera is a revision all described with re-illustration their type species. This project was organized under the auspices International Association Radiolarian Paleontologists (Inter-Rad), and carried out by Working Group. second two contributions, this one devoted to Jurassic-Cretaceous period. It contains 581 part shares 30 in common Triassic catalogue, most which arose Carnian, Norian Rhaetian. sharp difference manifested between fauna so evident that...
The processes of arc initiation at the margin an oceanic plateau are remarkably well preserved along southern coastline eastern Costa Rica and western Panama. We present new results a combined tectonostratigraphic petrologic study with which protoarc (75–73 Ma) (89–85 is documented. Dykes igneous rocks within occurrences widely distributed. These types field observations, geochemical data, paleontologic ages for Late Cretaceous to Eocene fore‐arc Golfito Complex Azuero Marginal (southern...
Research Article| January 01, 2001 Radiolarite ages in Alpine-Mediterranean ophiolites: Constraints on the oceanic spreading and Tethys-Atlantic connection Markus Bill; Bill 1Institut de Géologie et Paléontologie, Université Lausanne, BFSH-2, CH-1015 Switzerland Search for other works by this author on: GSW Google Scholar Luis O'Dogherty; O'Dogherty 2Facultad Ciencias del Mar, Universidad Cádiz, 11510 Puerto Real, Spain Jean Guex; Guex 3Institut Peter O. Baumgartner; Baumgartner Henri...
Abstract Radiolarites, commonly comprising chert‐shale couplets, feature prominently in the Mesozoic stratigraphy of Neotethyan realm. The origin and significance these deposits, especially with regard to understanding palaeoproductivity that region, remains controversial. This study examines transport processes accumulation rates radiolarians/radiolarites, as well chronology radiolarite sedimentation based on revised data from Southern Alps new Balagne Nappes, Alpine Corsica. Results...
A full global geodynamical model over 600 million years (Ma) has been developed at the University of Lausanne during past 20 years. We show herein how 2D maps were converted into 3D (i.e., hypsometry and bathymetry), using a heuristic-based approach. Although synthetic topography may be viewed as relatively crude, it advantage being applicable anywhere on globe any geological time. The allows estimating sea-level changes throughout Phanerozoic, with possibility, for first time, to flood...
We propose a new terrane subdivision of Nicaragua and Northern Costa Rica, based on Upper Triassic to Cretaceous radiolarian biochronology ribbon radiolarites, the newly studied Siuna Serpentinite Melange, published 40Ar/39Ar dating geochemistry mafic ultramafic igneous rock units area. The Mesquito Composite Oceanic Terrane (MCOT) comprises southern half Chortis Block, that was assumed be continental fragment N-America. The MCOT is defined by 4 corner localities characterized oceanic rocks...
Research Article| April 01, 2011 Oceanic intraplate volcanoes exposed: Example from seamounts accreted in Panama David M. Buchs; Buchs 1Institut de Géologie et Paléontologie, Université Lausanne, CH-1015 Switzerland Search for other works by this author on: GSW Google Scholar Richard J. Arculus; Arculus 2Research School of Earth Sciences, The Australian National University, Canberra, ACT 0200, Australia Peter O. Baumgartner; Baumgartner Alexey Ulianov 3Institut Minéralogie Géochimie, Author...
Abstract Multidisciplinary study of the Osa and Burica peninsulas, Costa Rica, recognizes Igneous Complex Mélange – records a complex Late Cretaceous–Miocene tectonic–sedimentary history. The Complex, an accretionary prism ( sensu stricto ) comprises mainly basaltic lava flows, with minor sills, gabbroic intrusives, pelagic limestones radiolarites. Sediments or igneous rocks derived from upper plate are absent. Four units delimited on base stratigraphy geochemistry lie in contact along...
During the last decades, numerous local reconstructions based on field geology were developed at University of Lausanne (UNIL). Team members UNIL participated in elaboration a 600 Ma to present global plate tectonic model deeply rooted geological data, controlled by geometric and kinematic constraints coherent with forces acting boundaries. In this paper, we compare values derived from (ages oceanic floor, production subduction rates, activity) combination chemical proxies (namely CO2,...