In today's world, Arcabuco Formation has become a topic of great importance and interest to a wide variety of individuals and organizations. From its impact on society to its implications on the economy, Arcabuco Formation has captured the attention of experts and everyday people alike. In this article, we will explore the different aspects related to Arcabuco Formation, from its evolution over time to its influence on the world today. Through in-depth analysis, we will seek to better understand the importance of Arcabuco Formation and how it is shaping our present and future.
The formation was first defined by Scheibe in 1938 and named after Arcabuco, Boyacá. The type section of the Arcabuco Formation was redefined in 1985 by Galvis and Rubiano around Villa de Leyva.
Description
Lithologies
The Arcabuco Formation is characterised by a sequence of light- to pink-coloured fine quartziticsandstones and conglomerates with red shales up to 50 metres (160 ft) in thickness intercalated. In the Arcabuco Formation, in the Iguaque Anticlinal, dinosaurtracks have been found. The overhanging rock shelter of Sáchica in Sáchica, Boyacá, consists of the sandstones of the Arcabuco Formation.
Stratigraphy and depositional environment
The 500 to 800 metres (1,600 to 2,600 ft) thick Arcabuco Formation unconformably overlies the Girón Formation and is overlain by the Rosablanca and Cumbre Formations. The age has been estimated to be Late Jurassic to Early Cretaceous. Stratigraphically, the formation is time equivalent with the Guavio and La Naveta Formations of the eastern and southern Altiplano respectively. The Arcabuco Formation has been deposited in a rift basin setting.
Redefined type locality of the Arcabuco Formation on the Altiplano Cundiboyacense
The Arcabuco Formation is found apart from its original type locality near Arcabuco, in the anticlinal of Lake Iguaque between Villa de Leyva, Sáchica and Chíquiza, where the formation has been redefined in the Arcabuco Anticlinal.
Galvis Arenas, Beatriz Elena, and José Leonardo Valencia Escobar. 2009. Contribución en la determinación de los posibles paleoambientes de las rocas Cretáceas Tempranas sobre la vía Tunja-Villa de Leyva (entre Alto del Arrayán - Peaje Sáchica) y sectores aledaños, departamento de Boyacá, 1–127. Universidad de Caldas.
Rodríguez Parra, Antonio José, and Orlando Solano Silva. 2000. Mapa Geológico del Departamento de Boyacá - 1:250,000 - Memoria explicativa, 1–120. INGEOMINAS.
Villamil, Tomas. 2012. Chronology Relative Sea Level History and a New Sequence Stratigraphic Model for Basinal Cretaceous Facies of Colombia, 161–216. Society for Sedimentary Geology (SEPM).
Maps
Beltrán, Alejandro; José Alfredo Lancheros; Carolina López; Claudia Chaquea; Alejandro Patiño; Angela Guerra; Julio C. Cabrera; Claudia I. Quintero, and Simón Emilio Molano. 2008. Plancha 134 - Puerto Parra - 1:100,000, 1. INGEOMINAS. Accessed 2017-06-06.
Angarita, Leonidas; Víctor Carrillo; Alfonso Castro; Rommel Daconte; Mario Niño; Orlando G. Pulido; J. Antonio Rodríguez; José María Royero, and Rosalba Salinas, Carlos Ulloa and Rodrigo Vargas. 2009. Plancha 135 - San Gil - 1:100,000, 1. INGEOMINAS. Accessed 2017-06-06.
Beltrán, Alejandro; José Alfredo Lancheros; Carolina López; Claudia Chaquea; Alejandro Patiño; Angela Guerra; Julio C. Cabrera; Claudia I. Quintero, and Simón Emilio Molano. 2008. Plancha 150 - Cimitarra - 1:100,000, 1. INGEOMINAS. Accessed 2017-06-06.