Articles

EVIDENCE OF A GUADALUPIAN AGE FOR THE KHUFF FORMATION OF SOUTHEASTERN OMAN: PRELIMINARY REPORT

LUCIA ANGIOLINI, ALDA NICORA, HUGO BUCHER, DANIEL VACHARD, ALAIN PILLEVUIT, JEAN-PIERRE PLATEL, JACK ROGER, AYMON BAUD, JEAN BROUTIN, HAROUB AL HASHMI, JEAN MARCOUX

Abstract


The Guadalupian succession of the Huqf area (Sultanate of Oman) represents a mega-sequence comprising the fluvial terrigenous Gharif Formation and the overlying marine Khuff Formation. The Khuff Fm. is subdivided into four members and is composed of marls and bioclastic limestones. The Khuff Fm. yields a rich fauna of brachiopods, conodonts, foraminifers, bivalves, gastropods, ostracods and cephalopods. The brachiopod fauna of the Khuff Fm. includes strophomenids, productids, orthids and terebratulids. The associated conodont fauna includes Hindeodus excavatus Behnken, Merrilina sp., M. praedivergens Kozur & Mostler, and Sweetina n. sp. (systematic descriptions of conodonts are given in the Paleontological Appendix). Foraminifers are represented by species of Miliolina and Rotaliina. The Khuff Fm. is given a Wordian age, based on brachiopods and conodonts. The depositional environment of the Khuff Fm. of southeastern Oman corresponds to the outer shelf of a large carbonate platform covering most of the Arabian Platform. The Khuff Fm. is interpreted as a major transgressive-regressive cycle related to differential subsidence.

 



Keywords


Full Text:

PDF


DOI: https://doi.org/10.13130/2039-4942/5337

NBN: http://nbn.depositolegale.it/urn%3Anbn%3Ait%3Aunimi-23783

Refbacks

  • There are currently no refbacks.