Paleogeography of Northern South America 120 Ma, by Ron Blakey
The Trincheras Formation (Spanish: Formación Trincheras, Kitr) is a geological formation of the Altiplano Cundiboyacense, Eastern Ranges of the Colombian Andes. The formation consisting of a lower unit of calcareous shales and an upper sequence of shales dates to the Early Cretaceous period; Early Aptian epoch and has a maximum thickness of 1,260 metres (4,130 ft). The formation, deposited in a marine platform environment, part of a transgressive cycle, hosts ammonite, bryozoan, mollusc and echinoid fossils.
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fossils. The formation was defined and named in 1969 by Cáceres and Etayo after Quebrada Trincheras, Apulo, Cundinamarca. The TrincherasFormation has a maximum...
Mexico The TrincherasFormation, a geological formation in Colombia This disambiguation page lists articles associated with the title Trinchera. If an internal...
have been found in the Murca Formation. The Murca Formation, belonging to the Cáqueza Group, underlies the TrincherasFormation, lowermost unit of the Villeta...
shales intercalated. The La Naveta Formation overlies the Útica Formation and is overlain by the TrincherasFormation. The age has been estimated to be...
ammonites and Etayo has helped describing many fossiliferous geologic formations of Colombia. Etayo obtained his MSc. degree in geology and geophysics...
The Chipaque Formation (Spanish: Formación Chipaque, K2cp, Kc) is a geological formation of the Altiplano Cundiboyacense, Eastern Ranges of the Colombian...
The La Frontera Formation (Spanish: Formación La Frontera, K2F, Ksf) is a geological formation, part of the Villeta Group, of the Altiplano Cundiboyacense...
The Paja Formation (Spanish: Formación Paja, K1p, Kip, Kimp, b3b6p) is an Early Cretaceous geologic formation of central Colombia. The formation extends...
The Guaduas Formation (Spanish: Formación Guaduas, K2P1G, K2E1G, KPgg, KTg, TKg, Ktg) is a geological formation of the Middle Magdalena Basin and the...
The Simijaca Formation (Spanish: Formación Simijaca, K2S, Kss) is a geological formation of the Altiplano Cundiboyacense, Eastern Ranges of the Colombian...
German delegation meets with General Francisco Franco to pressure the formation of a single Nationalist leader following the death of General José Sanjurjo...
The Rosablanca Formation (Spanish: Formación Rosablanca, Kir) is a geological formation of the Altiplano Cundiboyacense, Eastern Ranges of the Colombian...
Thessaly, Greece. It is situated on the northeast side of a limestone rock formation that is 3 km (2 mi) south of Kalambaka. The site has become increasingly...
The Macanal Formation or Macanal Shale (Spanish: (Formación) Lutitas de Macanal, Kilm, K1m) is a fossiliferous geological formation of the Altiplano Cundiboyacense...
The Guavio Formation (Spanish: Calizas del Guavio, Kicg) is a geological formation of the Altiplano Cundiboyacense, Eastern Ranges of the Colombian Andes...
Park The Morrison Formation was formed during the Cretaceous and Jurassic Period 100-150 million years ago. The Morrison Formation contains some of the...
The Hondita Formation (Spanish: Formación Hondita, Ksh) is a fossiliferous geological formation of the Upper Magdalena Valley (VSM) and surrounding Central...
Giulio Maria (2022-11-05). "Dientes de dragón: así es la línea Wagner, la trinchera rusa antitanque en Ucrania". elconfidencial.com (in Spanish). Retrieved...
They date to between 600,000 and 400,000 years BP. The Gran Dolina (also Trinchera Dolina, English: Dolina trench) site is a huge cavern, which has been...
Monarchy Spain Spanish America Amerindian allies of the Royalists Victory Formation of the new Hispanic American states Subsequently, Spain recognizes each...
state near the coast: the Trincheras tradition, the Huatabampo tradition, and the Central Coast tradition. The Trincheras tradition is dated to between...
The Pacho Formation (Spanish: Limolitas de Pacho, Kslp) is a geological formation of the Altiplano Cundiboyacense, Eastern Ranges of the Colombian Andes...
The Ritoque Formation (Spanish: Formación Ritoque, Kiri, Kirt) is a geological formation of the Altiplano Cundiboyacense, Eastern Ranges of the Colombian...
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