Rift-related sedimentation and stratigraphy, southern Yemen (Gulf of Aden). / Watchorn, F; Nichols, Gary; Bosence, Daniel.

Sedimentation and Tectonics in Rift Basins : Red Sea:- Gulf of Aden. ed. / Bruce H Purser; Dan W J Bosence. Springer, 1998. p. 165-189.

Research output: Chapter in Book/Report/Conference proceedingChapter

Published

Standard

Rift-related sedimentation and stratigraphy, southern Yemen (Gulf of Aden). / Watchorn, F; Nichols, Gary; Bosence, Daniel.

Sedimentation and Tectonics in Rift Basins : Red Sea:- Gulf of Aden. ed. / Bruce H Purser; Dan W J Bosence. Springer, 1998. p. 165-189.

Research output: Chapter in Book/Report/Conference proceedingChapter

Harvard

Watchorn, F, Nichols, G & Bosence, D 1998, Rift-related sedimentation and stratigraphy, southern Yemen (Gulf of Aden). in BH Purser & DWJ Bosence (eds), Sedimentation and Tectonics in Rift Basins : Red Sea:- Gulf of Aden. Springer, pp. 165-189. https://doi.org/10.1007/978-94-011-4930-3_11

APA

Watchorn, F., Nichols, G., & Bosence, D. (1998). Rift-related sedimentation and stratigraphy, southern Yemen (Gulf of Aden). In B. H. Purser, & D. W. J. Bosence (Eds.), Sedimentation and Tectonics in Rift Basins : Red Sea:- Gulf of Aden (pp. 165-189). Springer. https://doi.org/10.1007/978-94-011-4930-3_11

Vancouver

Watchorn F, Nichols G, Bosence D. Rift-related sedimentation and stratigraphy, southern Yemen (Gulf of Aden). In Purser BH, Bosence DWJ, editors, Sedimentation and Tectonics in Rift Basins : Red Sea:- Gulf of Aden. Springer. 1998. p. 165-189 https://doi.org/10.1007/978-94-011-4930-3_11

Author

Watchorn, F ; Nichols, Gary ; Bosence, Daniel. / Rift-related sedimentation and stratigraphy, southern Yemen (Gulf of Aden). Sedimentation and Tectonics in Rift Basins : Red Sea:- Gulf of Aden. editor / Bruce H Purser ; Dan W J Bosence. Springer, 1998. pp. 165-189

BibTeX

@inbook{f81ab45b68b64f73a1a10eec700cfe25,
title = "Rift-related sedimentation and stratigraphy, southern Yemen (Gulf of Aden)",
abstract = "Syn- and post-rift successions exposed on land in a 200 km stretch along the northern margin of the Gulf of Aden in southern Yemen can be divided into three depositional sequences. Sequence 1 is a patchily developed and highly variable alluvial plain and saline playa facies assemblage of probable Oligocene age. Sequence 2 comprises fine-grained fluvial sands grading into marginal marine, coastal sabkha-type deposits with some local reefal beds. It has a cumulative thickness of between one and two kilometres and displays evidence of upward gradation to isolated depocentres. Sequence 3 facies reflect the current physiography of the margin with alluvial sediments interfingering with coastal clastic and carbonate facies.These depositional sequences and their relationship to the rift structure indicate that rift flank uplift occurred before any significant regional extension. The main control on sedimentation was a series of basement highs which compartmentalized the rift margin into numerous sub-basins. Thick sedimentary packages were deposited between the high regions while thin and patchy deposits characterize the highs. Three phases of tectonism are indicated: at 35 Ma the onset of rifting occurred followed by an acceleration in subsidence at around 30 Ma; the rifting climax occurred between 20 and 18 Ma. Sequences 1 and 2 were deposited during extension but do not show growth relationships to faults or any synsedimentary deformation. Sequence 3 represents a post-rift stage which began at about 18 Ma and was characterized by regional uplift, tectonic quiescence and rift shoulder erosion. The facies and geometry of the depositional units (sequence 1 and 2) suggest that sediments accumulated passively in a low relief marginal marine/coastal system dominated by regional subsidence. This is not typical of classical facies models of rift fill and is interpreted to be due to sediment passively infilling earlier formed, fault-generated, accommodation space.",
author = "F Watchorn and Gary Nichols and Daniel Bosence",
year = "1998",
doi = "10.1007/978-94-011-4930-3_11",
language = "English",
isbn = "978-94-010-6068-4",
pages = "165--189",
editor = "Purser, {Bruce H} and Bosence, {Dan W J}",
booktitle = "Sedimentation and Tectonics in Rift Basins",
publisher = "Springer",

}

RIS

TY - CHAP

T1 - Rift-related sedimentation and stratigraphy, southern Yemen (Gulf of Aden)

AU - Watchorn, F

AU - Nichols, Gary

AU - Bosence, Daniel

PY - 1998

Y1 - 1998

N2 - Syn- and post-rift successions exposed on land in a 200 km stretch along the northern margin of the Gulf of Aden in southern Yemen can be divided into three depositional sequences. Sequence 1 is a patchily developed and highly variable alluvial plain and saline playa facies assemblage of probable Oligocene age. Sequence 2 comprises fine-grained fluvial sands grading into marginal marine, coastal sabkha-type deposits with some local reefal beds. It has a cumulative thickness of between one and two kilometres and displays evidence of upward gradation to isolated depocentres. Sequence 3 facies reflect the current physiography of the margin with alluvial sediments interfingering with coastal clastic and carbonate facies.These depositional sequences and their relationship to the rift structure indicate that rift flank uplift occurred before any significant regional extension. The main control on sedimentation was a series of basement highs which compartmentalized the rift margin into numerous sub-basins. Thick sedimentary packages were deposited between the high regions while thin and patchy deposits characterize the highs. Three phases of tectonism are indicated: at 35 Ma the onset of rifting occurred followed by an acceleration in subsidence at around 30 Ma; the rifting climax occurred between 20 and 18 Ma. Sequences 1 and 2 were deposited during extension but do not show growth relationships to faults or any synsedimentary deformation. Sequence 3 represents a post-rift stage which began at about 18 Ma and was characterized by regional uplift, tectonic quiescence and rift shoulder erosion. The facies and geometry of the depositional units (sequence 1 and 2) suggest that sediments accumulated passively in a low relief marginal marine/coastal system dominated by regional subsidence. This is not typical of classical facies models of rift fill and is interpreted to be due to sediment passively infilling earlier formed, fault-generated, accommodation space.

AB - Syn- and post-rift successions exposed on land in a 200 km stretch along the northern margin of the Gulf of Aden in southern Yemen can be divided into three depositional sequences. Sequence 1 is a patchily developed and highly variable alluvial plain and saline playa facies assemblage of probable Oligocene age. Sequence 2 comprises fine-grained fluvial sands grading into marginal marine, coastal sabkha-type deposits with some local reefal beds. It has a cumulative thickness of between one and two kilometres and displays evidence of upward gradation to isolated depocentres. Sequence 3 facies reflect the current physiography of the margin with alluvial sediments interfingering with coastal clastic and carbonate facies.These depositional sequences and their relationship to the rift structure indicate that rift flank uplift occurred before any significant regional extension. The main control on sedimentation was a series of basement highs which compartmentalized the rift margin into numerous sub-basins. Thick sedimentary packages were deposited between the high regions while thin and patchy deposits characterize the highs. Three phases of tectonism are indicated: at 35 Ma the onset of rifting occurred followed by an acceleration in subsidence at around 30 Ma; the rifting climax occurred between 20 and 18 Ma. Sequences 1 and 2 were deposited during extension but do not show growth relationships to faults or any synsedimentary deformation. Sequence 3 represents a post-rift stage which began at about 18 Ma and was characterized by regional uplift, tectonic quiescence and rift shoulder erosion. The facies and geometry of the depositional units (sequence 1 and 2) suggest that sediments accumulated passively in a low relief marginal marine/coastal system dominated by regional subsidence. This is not typical of classical facies models of rift fill and is interpreted to be due to sediment passively infilling earlier formed, fault-generated, accommodation space.

U2 - 10.1007/978-94-011-4930-3_11

DO - 10.1007/978-94-011-4930-3_11

M3 - Chapter

SN - 978-94-010-6068-4

SP - 165

EP - 189

BT - Sedimentation and Tectonics in Rift Basins

A2 - Purser, Bruce H

A2 - Bosence, Dan W J

PB - Springer

ER -