A5082500138- Geological and Tectonic Studies in Latin America
- Geological and Geochemical Analysis
- Geology and Paleoclimatology Research
- earthquake and tectonic studies
- Geological formations and processes
- Paleontology and Stratigraphy of Fossils
- Geological and Geophysical Studies Worldwide
- Plant Diversity and Evolution
- Environmental and Cultural Studies in Latin America and Beyond
- Geochemistry and Geologic Mapping
- Evolution and Paleontology Studies
- Geological and Geophysical Studies
- Lichen and fungal ecology
- Fern and Epiphyte Biology
- Lepidoptera: Biology and Taxonomy
- Hydrocarbon exploration and reservoir analysis
- Marine and coastal ecosystems
- Ecology and Vegetation Dynamics Studies
- Marine and environmental studies
- Archaeology and ancient environmental studies
- Heavy metals in environment
- Fossil Insects in Amber
- Ancient Near East History
- Geochemistry and Elemental Analysis
- Copper Interconnects and Reliability
University of Caldas
2015-2024
Abstract A geological transect across the suture separating northwestern South America from Panama Arc helps document provenance and thermal history of both crustal domains zone. During middle Miocene, strata were being accumulated over zone between continental margin. Integrated analyses those Miocene show presence mixed sources that includes material derived two major domains: old American orogens younger Arc. Coeval moderately rapid exhumation Upper Cretaceous to Paleogene sediments...
Deltaic depositional systems are characterized by a complex interaction of physical, chemical, and biological factors. Although fluvial-, wave- tidal-dominated deltaic environments have been extensively studied, evaluation the processes in tropical mixed sedimentary has not fully documented. Tropical regions with active margins tectonic where these multiple factors act on development coastal systems. An onshore well-core from this setting (Sinú-San Jacinto Basin, Colombian Caribbean)...
Abstract A controversy has developed in recent years regarding the timing of closure Central American Seaway. This tectonic event significantly impacted oceanic circulation between tropical Pacific and Atlantic oceans resulted formation a land bridge connecting South North continents. The long-held view Pliocene age (ca. 3 Ma) for Seaway been challenged by proposal that Panamá Arc collided with America during Middle Miocene (15–13 as deep gap them closed along Uramita suture zone. However,...
Abstract A palynological study of the Cerrejon Formation was conducted in order to date formation and understand floristic composition diversity a Paleocene tropical site. The outcrops Coal Mine, largest open cast coal mine world. Two cores (725 m) were provided by Carbones del LLC for study. hundred samples prepared palynology, at least 150 palynomorphs counted per sample where possible. Several statistical techniques including rarefaction, species accumulation curves, detrended...
ABSTRACT Aim Forest composition and distribution are determined by a myriad of factors, including climate. As models tropical rain forest, palms often used as indicator taxa, particularly the Mauritiinae. We question, what characterizes Mauritiinae pollen in global fossil record? And when did become endemic to South America? Location Global tropics. Taxon (Arecaceae: Lepidocaryeae). Methods Pollen trait data from extinct extant were generated light‐, scanning‐, transmission electron...
Submarine channel mouth settings are hardly preserved in the stratigraphic record. Although they still poorly known with respect to other segments of turbidite systems, conceptual models being refined light new discoveries modern and ancient examples. Still, some questions such as transition between expansion zones traditional Channel-Lobe Transition Zone (CLTZ) remain open systems. Upper Eocene deposits Colombian Caribbean (San Jacinto Fold Belt) interpreted here a fan-delta-fed, submarine,...
We present dinoflagellate assemblages contained in samples from the exploratory well Buenaventura 1-ST-P, located on Colombian Pacific coast. The biostratigraphic model includes data calcareous nannofossils and dinoflagellates studied same samples. paleobathymetric evolution for stratigraphic column is interpreted its lithology, content of benthic foraminifera palynomorphs. propose a chronostratigraphic framework based correlation integrated biostratigraphy, this allows identification...
Abstract A palynological study of the Cerrejon Formation was conducted in order to date formation and understand floristic composition diversity a Paleocene tropical site. The outcrops Coal Mine, largest open cast coal mine world. Two cores (725 m) were provided by Carbones del LLC for study. hundred samples prepared palynology, at least 150 palynomorphs counted per sample where possible. Several statistical techniques including rarefaction, species accumulation curves, detrended...
The Upper Cretaceous deposits of northwestern Colombia accumulated in two regions with distinct tectonic settings. eastern deposits, consisting Turonian–Maastrichtian rocks from the Magdalena Valley (UMV) and Cesar-Rancheria basins, were deposited by an epicontinental sea that partially covered South American Plate. In contrast, western which comprise a series highly faulted folded Coniacian–Maastrichtian Sinú-San Jacinto Folded Belt (SSJFB), Gorgonilla Island, Western Cordillera, influenced...
The Sinú-San Jacinto Belt (SSJB) is a set of folded and faulted onshore deposits in the Caribbean region Colombia near tectonic boundary South American plates. Previous studies relied on biostratigraphic data from mollusks, benthic subsequently planktonic foraminifera to establish tectonostratigraphic framework Late Cretaceous Pleistocene for these deposits. In this study, we collected over 10 years new information calcareous nannofossils, an oceanic micropaleontological group with...
Abstract Mesozoic and Cenozoic strata of the San Jacinto Fold Belt (Colombian Caribbean) provide insights about sedimentary environments paleogeographic evolution in transition between northern Andes South Caribbean deformed belt. We report new provenance (conventional sandstone petrography, heavy mineral analysis, detrital zircon U-Pb geochronology typology) micropaleontologic data (palynology, calcareous nannofossils, foraminifera) samples collected from lower Eocene (San Cayetano...
Abstract This work presents a detailed study of the pollen and spore distribution in Paleocene‐Eocene Lisama La Paz Formations on eastern border Middle Magdalena Valley, Colombia. One hundred forty‐seven samples obtained from cores outcrops were prepared for palynological research, fifty‐nine which rich spores. Three taxa identified. The studied stratigraphic interval is 2000 m thick coastal fluvial deposit formed variable subsiding tectonic setting. Formation characterized by dominance...