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Rocas paleozoicas en el río Nevado, Boyacá, Santander

 Volume 1




Volume  1 Proterozoic Paleozoic


Table of Contents

Only the abstracts and keywords of the manuscripts accepted up to now have been included.


Prologue

By Victor A. RAMOS

Pages i–ii

 

Presentation

By Jorge GÓMEZ TAPIAS, Alberto NÚÑEZ TELLO, Daniela MATEUS ZABALA , Fernando Alirio ARCÁRCEL GUTIÉRREZ and Ana Oliva PINILLA PACHÓN 

Pages iii–iv

 

Chapter 1

Physiographic and geological context of the Colombian territory

By Jorge GÓMEZ TAPIAS and Alberto NÚÑEZ TELLO

Pages 1–17

 

Chapter 2

Contribution of new airborne geophysical information to the geological knowledge of eastern Colombia

By Ismael Enrique MOYANO NIETO, Renato CORDANI, Lorena Paola CARDENAS ESPINOSA, Norma Marcela LARA MARTÍNEZ, Oscar Eduardo ROJAS SARMIENTO, Manuel Fernando PUENTES TORRES, Diana Lorena OSPINA MONTES, Andrés Felipe SALAMANCA SAAVEDRA and Gloria PRIETO RINCÓN

Pages 19–25

Manuscript accepted October 29, 2018

Keywords: geophysical interpretation, magnetics, gamma spectrometry, Colombian Amazonia.
Keywords: Anacona, tectonostratigraphic terranes, Colombian Andes, Proterozoic sedimentation, garnet amphibolites.
Chapter 9

Paleozoic of Colombian Andes: New paleontological data and regional stratigraphic review

By Mario MORENO–SÁNCHEZ, Arley GÓMEZ–CRUZ and José BUITRAGO–HINCAPIÉ

Pages 171–202

 

Chapter 10

Fragments of a Permian arc on the western margin of the Neoproterozoic basement of Colombia

By Gabriel RODRÍGUEZ–GARCÍA, Ana María CORREA–MARTÍNEZ, Juan Pablo ZAPATA–VILLADA and Gloria OBANDO–ERAZO

Pages 204–245

Manuscript accepted October 29, 2018


Airborne geophysics is an easy way to increase and complement the geological knowledge of large areas, especially very remote areas like the Colombian Amazonia. For this objective and to identify areas of interest for mineral resources, the Colombian government has made extensive efforts to fly the Andean and eastern parts of the country, collecting more than 400 000 linear km of magnetic and gamma spectrometric information over the Colombian Amazonia. This document focuses on describing the potential of these data to increase the geological knowledge of the Amazonian region. It presents a methodology for interpretation of geophysical data and its application over a specific area in the eastern Guainía Department, where the Paleoproterozoic to Mesoproterozoic igneous and metamorphic rocks of the Guiana Shield (Mitú Complex, Parguaza Granite) and several lineaments and structural trends that have not been previously reported were identified. These crystalline basement rocks are partially covered by Miocene sedimentary rocks, recent alluvial deposits and dense rainforest coverage, which make geological mapping very difficult. The results increase the relevance of this type of geophysical interpretation to the geoscientific knowledge about Colombia. This paper also highlights the training of Colombian geoscientists in modern geophysical interpretation techniques.

Chapter 3

Tectonostratigraphic terranes in Colombia: An update. First part: Continental terranes

By Jorge Julián RESTREPO and Jean–François TOUSSAINT

Pages 27–61

Manuscript accepted March 6, 2019


Keywords:   continental  terranes, accretions, displaced terranes, Colombia,     Andes.

 

Chapter 4

Zircon U–Pb geochronology and Hf–Nd–O isotope geochemistry of the Paleoproterozoic to Mesoproterozoic basement in the westernmost Guyana Shield

By Mauricio IBANEZ–MEJIA and Umberto G. CORDANI

Pages 63–77

 

Chapter 5

Precambrian records of Llanos Orientales Basin, Colombia

By Hernando DUEÑAS–JIMÉNEZ and Jorge MONTALVO–JÓNSSON

Pages 79–95

 

Chapter 6

The Putumayo Orogen of Amazonia: A synthesis

By Mauricio IBANEZ–MEJIA

Pages 97–115

 

Chapter 7

Paleontology of the Paleozoic rocks of the Llanos Orientales Basin, Colombia

By Hernando DUEÑAS–JIMÉNEZ, Victoria Elena CORREDOR–BOHÓRQUEZ and Jorge MONTALVO–JÓNSSON

Pages 117–133

 

Chapter 8

The Anacona Terrane: A small early Paleozoic peri–Gondwanan terrane in the Cauca–Romeral Fault System

By Jorge Julián RESTREPO, Uwe MARTENS and Wilmer E. GIRALDO–RAMÍREZ

Pages 135–169

Manuscript accepted October 29, 2018

Número de visitas:
Keywords: geochemistry, UPb geochronology, Colombian Andes, igneous, metamorphic rocks.