Cretaceous-Tertiary boundary sequence in the Cacarajicara Formation, western Cuba

An impact-related, high-energy, gravity-flow deposit

Shoichi Kiyokawa, Ryuji Tada, Manuel Iturralde-Vinent, Eiichi Tajika, Shinji Yamamoto, Tetsuo Oji, Youichiro Nakano, Kazuhisa Goto, Hideo Takayama, Dora Garcia Delgado, Consuelo Diaz Otero, Reinaldo Rojas-Consuegra, Takafumi Matsui

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The Cacarajicara Formation of western Cuba is a more than 700-m-thick calcareous clastic sequence that contains shocked quartz throughout, and spherules. Three members are recognized. The lower member consists of limestone and chert boulders, and disconformably overlies Cretaceous deep-water turbidite. It is characterized by: (1) a grain-supported fabric with only a small amount of matrix, (2) 5-15 cm, well-sorted clasts and occasional boulders, (3) reversely graded, discoidal or rectangular boulders showing a preferred orientation, (4) abundant shallow- and deep-water carbonate clasts in a well-mixed fabric, (5) direct contact between adjacent clasts, and (6) hydrostatic deformation within a black clay matrix. This evidence suggests that the lower member was deposited under conditions of high-density and high-speed laminar flow. The middle member consists of upward graded, massive to well-bedded, homogeneous calcarenite. Unusual fluid-escape structures in the thick calcarenite suggest that this member formed by high-density turbidity suspension. The upper member consists of fine calcarenite mudstone; there is no evidence of bioturbation. We infer that it was deposited from a dilute, low-density suspension. On the basis of these criteria, the Cacarajicara Formation is interpreted to be a single hyperconcentrated flow that was formed by high-energy and high-speed concentrated flow. The south-southeast paleocurrent direction suggests that this high-energy flow originated on the Yucatan platform and was triggered by the Chicxulub impact.We propose that a gigantic flow deposit was induced by earthquake-generated collapse of the Yucatan platform margin owing to ballistic flow from the Chicxulub impact.

Original languageEnglish
Pages (from-to)125-144
Number of pages20
JournalSpecial Paper of the Geological Society of America
Volume356
DOIs
Publication statusPublished - Jan 1 2002

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gravity flow
calcarenite
clast
energy
deep water
paleocurrent
spherule
matrix
laminar flow
energy flow
preferred orientation
bioturbation
chert
turbidite
hydrostatics
mudstone
turbidity
shallow water
limestone
quartz

All Science Journal Classification (ASJC) codes

  • Geology

Cite this

Cretaceous-Tertiary boundary sequence in the Cacarajicara Formation, western Cuba : An impact-related, high-energy, gravity-flow deposit. / Kiyokawa, Shoichi; Tada, Ryuji; Iturralde-Vinent, Manuel; Tajika, Eiichi; Yamamoto, Shinji; Oji, Tetsuo; Nakano, Youichiro; Goto, Kazuhisa; Takayama, Hideo; Garcia Delgado, Dora; Diaz Otero, Consuelo; Rojas-Consuegra, Reinaldo; Matsui, Takafumi.

In: Special Paper of the Geological Society of America, Vol. 356, 01.01.2002, p. 125-144.

Research output: Contribution to journalArticle

Kiyokawa, S, Tada, R, Iturralde-Vinent, M, Tajika, E, Yamamoto, S, Oji, T, Nakano, Y, Goto, K, Takayama, H, Garcia Delgado, D, Diaz Otero, C, Rojas-Consuegra, R & Matsui, T 2002, 'Cretaceous-Tertiary boundary sequence in the Cacarajicara Formation, western Cuba: An impact-related, high-energy, gravity-flow deposit', Special Paper of the Geological Society of America, vol. 356, pp. 125-144. https://doi.org/10.1130/0-8137-2356-6.125
Kiyokawa, Shoichi ; Tada, Ryuji ; Iturralde-Vinent, Manuel ; Tajika, Eiichi ; Yamamoto, Shinji ; Oji, Tetsuo ; Nakano, Youichiro ; Goto, Kazuhisa ; Takayama, Hideo ; Garcia Delgado, Dora ; Diaz Otero, Consuelo ; Rojas-Consuegra, Reinaldo ; Matsui, Takafumi. / Cretaceous-Tertiary boundary sequence in the Cacarajicara Formation, western Cuba : An impact-related, high-energy, gravity-flow deposit. In: Special Paper of the Geological Society of America. 2002 ; Vol. 356. pp. 125-144.
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AU - Iturralde-Vinent, Manuel

AU - Tajika, Eiichi

AU - Yamamoto, Shinji

AU - Oji, Tetsuo

AU - Nakano, Youichiro

AU - Goto, Kazuhisa

AU - Takayama, Hideo

AU - Garcia Delgado, Dora

AU - Diaz Otero, Consuelo

AU - Rojas-Consuegra, Reinaldo

AU - Matsui, Takafumi

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