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Deciphering Deformation History of Overturned Strata along a West Crocker Formation Outcrop (NE Borneo, Malaysia) ORAL TALK

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Abstract

In northern Borneo island, Sabah province of Malaysia, several outcrops of deep water Oligocene –Lower Miocene sediments of West Crocker Formation have been interpreted as being overturned during Miocene Borneo orogeny . This paper will emphasize on the evaluation of one overturned outcrop strata and how a more accurate analysis would allow geoscientists to conclude more precisely on the tectonic history and eventually its impact on regional tectonics .
Deciphering Deformation History of Overturned
Strata along a West Crocker Formation Outcrop
(NE Borneo, Malaysia)
Dr. Carlos Giraldo* & Dr. Jyoti Shah
Petronas Carigali Sdn Bhd, Kuala Lumpur
carlosmaria.giraldo@petronas.com , jyoti.shah@petronas.com
Open
Dr. Carlos Giraldo & Dr. Jyoti Shah Deciphering Deformation History of Overturned Strata along a West Crocker Formation Outcrop (NE Borneo, Malaysia) EAGE Congress, 3-5 December 2018,Kuala Lumpur
Open
Overview
1. Introduction
2. Preliminary considerations
3. Geological context
4. Reconstruction
5. Conclusions
6. References
Dr. Carlos Giraldo & Dr. Jyoti Shah
Dr. Carlos Giraldo & Dr. Jyoti Shah Deciphering Deformation History of Overturned Strata along a West Crocker Formation Outcrop (NE Borneo, Malaysia) EAGE Congress, 3-5 December 2018,Kuala Lumpur
Location
150 Km
https://lta.cr.usgs.gov/citation
Deep water OligoceneLower Miocene sediments of West Crocker Formation is reported being
overturned during Miocene Borneo orogeny
Open
How a more accurate analysis could help geoscientists to conclude precisely on the tectonic
history and eventually its impact on regional tectonic framework.
Dr. Carlos Giraldo & Dr. Jyoti Shah Deciphering Deformation History of Overturned Strata along a West Crocker Formation Outcrop (NE Borneo, Malaysia) EAGE Congress, 3-5 December 2018,Kuala Lumpur
1. Introduction
2. Preliminary considerations
3. Geological context
4. Reconstruction
5. Conclusions
6. References
Open
Open
Dr. Carlos Giraldo & Dr. Jyoti Shah Deciphering Deformation History of Overturned Strata along a West Crocker Formation Outcrop (NE Borneo, Malaysia) EAGE Congress, 3-5 December 2018,Kuala Lumpur
Synsedimentary Deformations (Venezuela)
Open
EW
500 Km
https://pubs.usgs.gov/of/2006/1109/
Cabrera et al., 1994
Early Cretaceous , Barranquin Formation
Dr. Carlos Giraldo & Dr. Jyoti Shah Deciphering Deformation History of Overturned Strata along a West Crocker Formation Outcrop (NE Borneo, Malaysia) EAGE Congress, 3-5 December 2018,Kuala Lumpur
Horizontal alignment of Bedding
Rotating outcrop 90 degrees anticlockwise…
Open
Cabrera et al., 1994
Apparent reverse
fault ?
EW
Fault is an Early Cretaceous growth fault
The sequence was rotated during Tertiary
Open
Normal fault
Outcrop Image
Dr. Carlos Giraldo & Dr. Jyoti Shah Deciphering Deformation History of Overturned Strata along a West Crocker Formation Outcrop (NE Borneo, Malaysia) EAGE Congress, 3-5 December 2018,Kuala Lumpur
Overview
1. Introduction
2. Preliminary considerations
3. Geological context
4. Reconstruction
5. Conclusions
6. References
Open
Open
Dr. Carlos Giraldo & Dr. Jyoti Shah Deciphering Deformation History of Overturned Strata along a West Crocker Formation Outcrop (NE Borneo, Malaysia) EAGE Congress, 3-5 December 2018,Kuala Lumpur
Open
Geodynamics of South East Asia
Open http://www.earthobservatory.sg/resources/maps/tertiary-deformation-asia
Dr. Carlos Giraldo & Dr. Jyoti Shah Deciphering Deformation History of Overturned Strata along a West Crocker Formation Outcrop (NE Borneo, Malaysia) EAGE Congress, 3-5 December 2018,Kuala Lumpur
Regional Cross-Section
Open
A
SE
NW
?
?
650 Km
2:1
Eurasian plate
50 Km
Celebes Sea
Upper mantle
Sabah Deep-water
toe-thrust belt
Offshore
Onshore Telupid High Neogene circular basins
Darvel Bay
ophiolite
Miocene
arc
Sunda Block
South China Sea
Modified after Hall (2013), Morley et al. (2011) & Sapin et al. (2013)
Mount Kinabalu
AB
Bhttps://lta.cr.usgs.gov/citation
Open
Dr. Carlos Giraldo & Dr. Jyoti Shah Deciphering Deformation History of Overturned Strata along a West Crocker Formation Outcrop (NE Borneo, Malaysia) EAGE Congress, 3-5 December 2018,Kuala Lumpur
Geology of NE Borneo
Open
150 Km
Tate, 2001
Open
Dr. Carlos Giraldo & Dr. Jyoti Shah Deciphering Deformation History of Overturned Strata along a West Crocker Formation Outcrop (NE Borneo, Malaysia) EAGE Congress, 3-5 December 2018,Kuala Lumpur
Open
Hall,2013
Open
Stratigraphy of NE Borneo
Onshore Sabah
Dr. Carlos Giraldo & Dr. Jyoti Shah Deciphering Deformation History of Overturned Strata along a West Crocker Formation Outcrop (NE Borneo, Malaysia) EAGE Congress, 3-5 December 2018,Kuala Lumpur
Open
Allagu ( 2017)
Open
Stratigraphy of NE Borneo
Offshore Sabah
Dr. Carlos Giraldo & Dr. Jyoti Shah Deciphering Deformation History of Overturned Strata along a West Crocker Formation Outcrop (NE Borneo, Malaysia) EAGE Congress, 3-5 December 2018,Kuala Lumpur
Overview
1. Introduction
2. Preliminary considerations
3. Geological context
4. Reconstruction
5. Conclusions
6. References
Open
Open
Dr. Carlos Giraldo & Dr. Jyoti Shah Deciphering Deformation History of Overturned Strata along a West Crocker Formation Outcrop (NE Borneo, Malaysia) EAGE Congress, 3-5 December 2018,Kuala Lumpur
Published Outcrop
Crocker Formation
Wang et al., 2016
Open
Open
F1 F2
F3
42 m
Older
NW SE
Younger
Dr. Carlos Giraldo & Dr. Jyoti Shah Deciphering Deformation History of Overturned Strata along a West Crocker Formation Outcrop (NE Borneo, Malaysia) EAGE Congress, 3-5 December 2018,Kuala Lumpur
Overturned Fold Geometry Scenario
280 m
SE
NW Normal limb Overturned limb
Axial planes
Possible Outcrop position
Open
Dr. Carlos Giraldo & Dr. Jyoti Shah Deciphering Deformation History of Overturned Strata along a West Crocker Formation Outcrop (NE Borneo, Malaysia) EAGE Congress, 3-5 December 2018,Kuala Lumpur
Unfolding the Structure
Open
110 deg. anti clockwise
rotation
280 m
SE
NW
410 m SE
NW
F1
F2
F1 F2
Open
After reconstruction:
(i) F1 and F2 are listric faulting
(ii) Faulting is possibly contemporaneous to West Crocker Formation deposition
Dr. Carlos Giraldo & Dr. Jyoti Shah Deciphering Deformation History of Overturned Strata along a West Crocker Formation Outcrop (NE Borneo, Malaysia) EAGE Congress, 3-5 December 2018,Kuala Lumpur
Restoration of Crocker Fm. Outcrop
Digitization of Image
Overturned strata
F3
42 m
Older
Wang et al., 2016
Younger
Topography
F1 F2
NW SE
F3
Younger
F1 F2
Topography
Open
Open
Dr. Carlos Giraldo & Dr. Jyoti Shah Deciphering Deformation History of Overturned Strata along a West Crocker Formation Outcrop (NE Borneo, Malaysia) EAGE Congress, 3-5 December 2018,Kuala Lumpur
Restoration of Crocker Fm. Outcrop
Rotation to achieve Geometry prior Overturning
Open
F3
F1
F2
Rotated strata to normal
position
110 deg. anti clockwise
rotation
Open
Outcrop
F1 F2
F3
Dr. Carlos Giraldo & Dr. Jyoti Shah Deciphering Deformation History of Overturned Strata along a West Crocker Formation Outcrop (NE Borneo, Malaysia) EAGE Congress, 3-5 December 2018,Kuala Lumpur
NW SE
15
0 m
F1
F2
F3 F3
F3
F3
F2 F2
F2
F2
F1
F1
F1
F1
NW SE
NW SE
NW SE
NW SE
IGEOSS software (Maerten and Maerten,2006 )
Open
Open
Restoration of Crocker Fm. Outcrop
Dr. Carlos Giraldo & Dr. Jyoti ShahDr. Carlos Giraldo & Dr. Jyoti Shah Deciphering Deformation History of Overturned Strata along a West Crocker Formation Outcrop (NE Borneo, Malaysia) EAGE Congress, 3-5 December 2018,Kuala Lumpur
Open
Overview
1. Introduction
2. Preliminary considerations
3. Geological context
4. Reconstruction
5. Conclusions
6. References
Dr. Carlos Giraldo & Dr. Jyoti Shah Deciphering Deformation History of Overturned Strata along a West Crocker Formation Outcrop (NE Borneo, Malaysia) EAGE Congress, 3-5 December 2018,Kuala Lumpur
Open
F1, F2 and F3 faults are syn-sedimentary faults resulted due to gravity-driven deformations in
Oligocene-Miocene
Due to limited data availability some questions need to be addressed:
-Are syn-sedimentary deformations contemporaneous to West Crocker Formation an important
structural style along West Sabah province?
-Are these Oligocene gravity-driven deformations associated to uplift along proto-Borneo Island
located southward?
-What mechanism need to be invoked in order to overturn West Crocker Formation strata: Tectonics,
Gravity-driven or a Combination?
Conclusions
Open
Dr. Carlos Giraldo & Dr. Jyoti ShahDr. Carlos Giraldo & Dr. Jyoti Shah Deciphering Deformation History of Overturned Strata along a West Crocker Formation Outcrop (NE Borneo, Malaysia) EAGE Congress, 3-5 December 2018,Kuala Lumpur
Open
Overview
1. Introduction
2. Preliminary considerations
3. Geological context
4. Reconstruction
5. Conclusions
6. References
Dr. Carlos Giraldo & Dr. Jyoti Shah Deciphering Deformation History of Overturned Strata along a West Crocker Formation Outcrop (NE Borneo, Malaysia) EAGE Congress, 3-5 December 2018,Kuala Lumpur
Hall, R. [2002] Cenozoic geological and plate tectonic evolution of SE Asia and the SW Pacific:
computer based reconstructions, model and animations. Journal of Asian Earth Sciences, 20: 353-
434.
https://lta.cr.usgs.gov/citation
Madon, M., [1999] Plate tectonic elements and the Evolution of Southeast Asia. In: Petroliam
Nasional Berhard PETRONAS (Eds.). The Petroleum Geology and Resources of Malaysia, p.
139-272.
Maerten, L. and Maerten, F., [2006] Chronologic modelling of faulted and fractured reservoirs
using geomechanically based restoration: Technique and industry applications. AAPG Bulletin,
90(8), 1201-1226.
Wang, P., Li, S., Guo, L., Jiang, S., Somerville, I., Zhao, S., Zhu, B., Chen, J., Dai, L., Suo, Y.
and Han, B., [2016]Mesozoic and Cenozoic orogenic processes in Borneo and their
mechanisms. Geological Journal, 51,464-489.
Abstract References
Open
ResearchGate has not been able to resolve any citations for this publication.
Article
Full-text available
The Borneo Accretionary Orogen (BAO) is located in a central position of SE Asia, surrounded by the long-lived westward subduction of the Pacific Plate, northward subduction of the Indian Plate beneath the Eurasian Plate and a passive continental margin of the South China Sea. Based on the previous studies in stratigraphy, structural geology and geophysics, a number of tectonic models on the BAO have been proposed, but these models do not perfectly match all of the geological facts. A field-based structural analysis of the rocks of Sabah in Malaysia has recognized that the deformation in Sabah can be divided into four episodes (D1-D4). The D1 deformation developed complete displacement foliation (S1) and NNE-trending thrusts. Then D1 structures were reworked by the subsequent D2 deformation. D2 deformation resulted in WNW- or NW-striking thrusts, followed by NNW–SSE-trending thrusts and folds (D3). Some NNE-trending sinistral strike-slip faults and WNW-trending dextral tension-shear faults (D4) offset the D3 structures. D1 is related to the collisional event in the Sabah Orogeny during 23-16 Ma, and D2 corresponds to the formation of the Deep Regional Uncomformity (DRU) at 16 Ma. D3 is related to the Shallow Regional Uncomformity (SRU) at 10 Ma. D4 is associated to the NW–SE-trending extension after the multi-stage collisional events. Analysis of the sedimentary and magmatic data reveals that the BAO is a Mesozoic and Cenozoic accretionary orogeny, represented by the intensely deformed Rajang-Crocker Group Accretionary prism, ophiolites and calc-alkaline igneous rocks. The accretionary orogen is related to the evolution of the Proto-South China Sea Ocean (PSCS). The PSCS continuously subducted under the Borneo Block and closed in the Late Eocene–Early Miocene time. The subduction zone of the PSCS retreated to the north in the Mesozoic and Cenozoic and migrated to the present-day Nansha Trough. The BAO is still active, as represented by a series of thrusting and subduction of the Dangerous Grounds under the Borneo Block. The NNE-trending subduction-related faults are considered as transform faults, rotating to the present-day NW-trending faults due to the anti-clockwise rotation of the entire Borneo Block. In particular, the previous NNE-trending Tinjar Fault is regarded as a major boundary in sedimentation and magmatism. To the NE of the fault, the strata and igneous rocks are Oligocene–Early Miocene, but to the SW of the fault, the strata and igneous rocks developed during the Cretaceous–Late Eocene interval. Copyright