Mesozoic transtensional basin history of the Eastern Cordillera, Colombian Andes: Inferences from tectonic models

2006 ◽  
Vol 21 (4) ◽  
pp. 383-411 ◽  
Author(s):  
L.F. Sarmiento-Rojas ◽  
J.D. Van Wess ◽  
S. Cloetingh
Keyword(s):  
Eastern Cordillera ◽  
Colombian Andes ◽  
History Of

scholarly journals Influence of salt in the tectonic development of the frontal thrust belt of the eastern Cordillera (Guatiquía area, Colombian Andes)

2015 ◽  
Vol 3 (4) ◽  
pp. SAA17-SAA27 ◽  
Author(s):  
Vanessa Parravano ◽  
Antonio Teixell ◽  
Andrés Mora
Keyword(s):  
Structural Model ◽  
Salt Tectonics ◽  
Thrust Belt ◽  
Eastern Cordillera ◽  
Salt Migration ◽  
Colombian Andes ◽  
Kinematic Evolution ◽  
Geologic Maps ◽  
History Of ◽  
Tectonic Development

Geologic maps, seismic lines, and data from a dry exploration well were used to develop a new structural model for a segment of the eastern foothills of the Eastern Cordillera of Colombia, emphasizing the role of salt tectonics. Milestones in the deformation history of the Guatiquía foothills were studied by sequential section restoration to selected steps. Uncommon structural geometries and sparse salt occurrences were interpreted in terms of a kinematic evolution in which Cretaceous salt migration in extension produced a diapiric salt wall, which was subsequently welded during the main episodes of the Andean compression, when the salt wall was squeezed generating a large overturned flap. Salt-weld strain hardening resulted in breakthrough thrusting across the overturned flap in late deformation stages. We have evaluated a pattern of salt tectonics previously unrecognized in the foothills thrust belt, which may be significant in other parts of the external Colombian Andes.

Andesitic (SiO2: ~60 wt%) monogenetic volcanism in the northern Colombian Andes: Crystallisation history of three Quaternary volcanoes

2021 ◽  
Vol 412 ◽  
pp. 107194
Author(s):  
Natalia Salazar-Muñoz ◽  
Carlos Arturo Ríos de la Ossa ◽  
Hugo Murcia ◽  
Dayana Schonwalder-Ángel ◽  
Luis Alvaro Botero-Gómez ◽  
...  
Keyword(s):  
Monogenetic Volcanism ◽  
Colombian Andes ◽  
History Of

The magmatic history of the Vetas-California mining district, Santander Massif, Eastern Cordillera, Colombia

2013 ◽  
Vol 45 ◽  
pp. 235-249 ◽  
Author(s):  
Luis C. Mantilla Figueroa ◽  
Thomas Bissig ◽  
Víctor Valencia ◽  
Craig J.R. Hart
Keyword(s):  
Mining District ◽  
Eastern Cordillera ◽  
History Of ◽  
Magmatic History

Passiflora splendida and P. quinonesiae, two new species of Passiflora supersection Tacsonia (Passifloraceae) from the Colombian Andes

Phytotaxa ◽  
2016 ◽  
Vol 268 (3) ◽  
pp. 181
Author(s):  
MIGUEL MACGAYVER BONILLA MORALES ◽  
ADRIANA CAROLINA AGUIRRE-MORALES ◽  
CREUCÍ MARÍA CAETANO
Keyword(s):  
New Species ◽  
Conservation Status ◽  
Stem Size ◽  
Eastern Cordillera ◽  
Floral Tube ◽  
Taxonomic Key ◽  
The Andes ◽  
Colombian Andes ◽  
Two New Species

Two new species, Passiflora splendida and P. quinonesiae of the section Colombiana from the Andes of Cundinamarca Department (Colombia Eastern Cordillera) are described and illustrated. Passiflora splendida is morphologically similar to P. cremastantha of the series Leptomischae, but can be distinguished by its linear stipules, petioles up to 1.8 cm long, lance-ovate leaves (6–8.5 × 2.5–3.3 cm), flowers with a diameter of 9–11 cm long, sepals and petals with intermediate disposition, both longer than the floral tube, floral tube of 3.2–4.5 cm long and fusiform ovary. Passiflora quinonesiae is similar to the species of series Colombianae, most closely related to P. cuatrecasasii and P. lanata. It differs from P. cuatrecasasii by its terete stem, size of the leaves 4.4–15 × 10.3 cm, elliptic bracts and floral tube 5.2–6 cm long. It differs from P. lanata by its ovate leaves, bracts halfway down the floral tube, elliptical sepals and petals, and elliptical ovary. In addition, a taxonomic key to section Colombiana ser. Colombianae and Leptomischae for Colombia is included and information about the ecology, distribution, and conservation status of P. splendida and P. quinonesiae are discussed.

scholarly journals COMMENT on Zorilla-Azcué, S., Gonzalez-Rodríguez, A., Oyama, K., González, M.A. & Rodríguez-Correa, H., The DNA history of a lonely oak: Quercus humboldtii phylogeography in the Colombian Andes. Ecology and Evolution 2021, doi:10.100-2/ece3.7529.

2021 ◽  
Author(s):  
Henry Hooghiemstra ◽  
Antoine Cleef ◽  
Suzette Flantua
Keyword(s):  
Montane Forest ◽  
Present Level ◽  
Northern Andes ◽  
Colombian Andes ◽  
History Of ◽  
Level Of Understanding ◽  
Published Paper ◽  
Quercus Forest ◽  
Quercus Humboldtii

We praise the authors for their work, and for the lyric title of their paper. We give a concise sketch of the present level of understanding of Quercus forest in Colombia. We identify the shortcomings in this published paper. We improve the relevance of this paper about Quercus as well as for future phylogenetic investigations other montane forest taxa to be framed in the rapidly improving palaeoecological understanding of the Northern Andes.

scholarly journals Constraints on the paleoelevation history of the Eastern Cordillera of Colombia from its palynological record

Geosphere ◽  
2021 ◽  
Author(s):  
Peter Molnar ◽  
Lina C. Pérez-Angel
Keyword(s):  
Probability Distributions ◽  
Objective Assessment ◽  
Probability Density Functions ◽  
Fossil Pollen ◽  
Density Functions ◽  
Fossil Plants ◽  
Eastern Cordillera ◽  
Surface Uplift ◽  
Complete Knowledge ◽  
History Of

We attempted to make an objective assessment of whether fossil pollen assemblages from the Sabana de Bogotá require surface uplift of ~2000 m since 6–3 Ma, as has been argued. We relied on recently published elevation ranges of plants for which fossil pollen has been found in sites 2000–2500 m high in the Sabana de Bogotá. The elevation ranges of fossil plants do not overlap, suggesting that those ranges may be too narrow. By weighting these elevation ranges by percentages of corresponding fossil pollen and summing them, we estimated probability density functions for past elevations. These probability distributions of past elevations overlap present-day elevations and therefore do not require surface uplift since deposition of the pollen. Fossil pollen assemblages include pollen from some plant taxa for which we do not know present-day elevation ranges, and therefore, with a more complete knowledge of elevation distributions, tighter constraints on elevations should be obtainable. The elevation of the oldest assemblage, from Tequendama, which lies at the southern edge of the Sabana de Bogotá and is thought to date from 16 to 6 Ma, is least well constrained. Although our analysis permits no change in elevation since the pollen was deposited, we consider 1000–2000 m of elevation gain since 15 Ma to be likely and consistent with an outward growth of the Eastern Cordillera.

Sign in / Sign up

Export Citation Format

Share Document