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DARWIN'S NAVIDAD EMBAYMENT, SANTIAGO REGION, CHILE, AS A MODEL OF THE SOUTHEASTERN PACIFIC SHELF
Author(s) -
Cecioni Giovanni
Publication year - 1980
Publication title -
journal of petroleum geology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.725
H-Index - 42
eISSN - 1747-5457
pISSN - 0141-6421
DOI - 10.1111/j.1747-5457.1980.tb00708.x
Subject(s) - geology , oceanography , darwin (adl) , engineering , systems engineering
The sedimentary sequence of Darwin's Navidad embayment overlies a Carboniferous metamorphic basement, and was deposited in a NNW‐striking basin, open toward the sea. The sediments formed in a temperate climate and consist of three marine sequences—Cretaceous, Eocene, and Miocene‐Pliocene. They exihibit some potential for oil and gas. The uppermost sediments of the Navidad Group were deposited in a more extensive sea, which was deeper, with lower wave energy. Near the present Pacific coastline, the sediments are tectonically disturbed. Farther east‐and northward, the sediments are not affected by great disturbances. Some good types of stratigraphical traps, such as eolian sand beaches, may be expected. Key Idea:The model adopted here is considered as one potential basin model for petroleum exploration in the southeastern Pacific shelf, where six or more NNW‐striking open embayments are present.