Seca Formation, Ecuador

Seca Formation
Stratigraphic range: Late Eocene
(Divisaderan-Tinguirirican)
~37–34 Ma

PreꞒ

Ꞓ

O

S

D

C

P

T

J

K

Pg

N

↓
Seca Formation; Stratigraphic range: Late Eocene; (Divisaderan-Tinguirirican); ~37–34 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Geological formation
Unit of
Underlies
Overlies
Lithology
Primary	Shale
Location
Coordinates	2°18′S 80°48′W / 2.3°S 80.8°WCoordinates: 2°18′S 80°48′W / 2.3°S 80.8°W
Approximate paleocoordinates	4°48′S 73°48′W / 4.8°S 73.8°W
Region	Santa Elena Province
Country	Ecuador
Extent
	Seca Formation, Ecuador (Ecuador)

The Seca Formation is a Late Eocene (Divisaderan to Tinguirirican in the SALMA classification) geologic formation of the in southwestern Ecuador. The shales of the formation have provided fossils of the marine snake Pterosphenus sheppardi.^[1]

Description[]

The Seca Formation, part of the , conformably overlies the and is overlain by the . The Seca Formation comprises grey to greenish shales deposited in a marine platform with submarine fans environment.^[2] The formation is a reservoir rock,^[3] and potential source rock,^[4] in the oil-rich Progreso Basin.

References[]

^ Ancón at Fossilworks.org
^ Lorenzo et al., 2018, p.34
^ Lorenzo et al., 2018, p.32
^ Lorenzo et al., 2018, p.31

Bibliography[]

Lorenzo, Erica et al. 2018. Correlación geoquímica entre crudos y rocas del sistema petrolero de la península de Santa Elena y el golfo de Guayaquil. Boletín de Geología 40. 31–42. Accessed 2018-09-11.

Seca Formation, Ecuador

Contents

Description[]

See also[]

References[]

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