Structural controls on polyphase hydrothermal dolomitization in the Kinta Valley, Malaysia: Paragenesis and regional tectono-magmatism

In the eastern side of the Malay Peninsula, thick successions of limestone formations preserve important records of the Mesozoic and Cenozoic tectonic events. Here we investigate the strata- and fracture-bound hydrothermal dolomites in the Palaeozoic carbonates of the Kinta Valley, western Peninsula...

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Main Authors: Ramkumar, M., Siddiqui, N.A., Mathew, M., Sautter, B., Hui, P.X., Nagarajan, R., Breitfeld, H.T., Santosh, M., Menier, D., Poppelreiter, M.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.22254 /
Published: 2019
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85061442212&doi=10.1016%2fj.jseaes.2019.02.004&partnerID=40&md5=46c6863596704e00eb2dbeb1d300774e
http://eprints.utp.edu.my/22254/
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spelling utp-eprints.222542019-02-28T02:48:19Z Structural controls on polyphase hydrothermal dolomitization in the Kinta Valley, Malaysia: Paragenesis and regional tectono-magmatism Ramkumar, M. Siddiqui, N.A. Mathew, M. Sautter, B. Hui, P.X. Nagarajan, R. Breitfeld, H.T. Santosh, M. Menier, D. Poppelreiter, M. In the eastern side of the Malay Peninsula, thick successions of limestone formations preserve important records of the Mesozoic and Cenozoic tectonic events. Here we investigate the strata- and fracture-bound hydrothermal dolomites in the Palaeozoic carbonates of the Kinta Valley, western Peninsular Malaysia. Based on their textural and morphologic characteristics, structural relationships with the host rock, different facies types, and associations with hydrothermal calcite and low-grade metamorphic marble, we attempt to trace their polyphase origin and relationship with thermo-tectonic events of the region. A detailed evaluation of the nature of brecciation and crystallization of polyphase dolomites, dolomitic limestones, limestones and marble, under the influences of episodic faulting, is associated with the regional structural geology with emphasis on pre-existing fault reactivations, granitic emplacement and progressive thermal influence. Supply of Mg 2+ from the host rock for dolomitization, limited and episodic influx of circulating fluids and cessation of thermo-tectonic evolution with progressive cooling are also inferred. Correlating the geological events in western Peninsular Malaysia with regional structural dynamics reveals that the major deformation episodes exerted first order controls on the loci of dolomite occurrences. The occurrence, geometry and structural relationships of the dolomites were controlled by successive magmatic events, whereas, the intensity of replacement dolomitization was controlled by host rock texture and varied bulk chemistry, together with the nature of circulating fluids. © 2019 2019 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85061442212&doi=10.1016%2fj.jseaes.2019.02.004&partnerID=40&md5=46c6863596704e00eb2dbeb1d300774e Ramkumar, M. and Siddiqui, N.A. and Mathew, M. and Sautter, B. and Hui, P.X. and Nagarajan, R. and Breitfeld, H.T. and Santosh, M. and Menier, D. and Poppelreiter, M. (2019) Structural controls on polyphase hydrothermal dolomitization in the Kinta Valley, Malaysia: Paragenesis and regional tectono-magmatism. Journal of Asian Earth Sciences . http://eprints.utp.edu.my/22254/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description In the eastern side of the Malay Peninsula, thick successions of limestone formations preserve important records of the Mesozoic and Cenozoic tectonic events. Here we investigate the strata- and fracture-bound hydrothermal dolomites in the Palaeozoic carbonates of the Kinta Valley, western Peninsular Malaysia. Based on their textural and morphologic characteristics, structural relationships with the host rock, different facies types, and associations with hydrothermal calcite and low-grade metamorphic marble, we attempt to trace their polyphase origin and relationship with thermo-tectonic events of the region. A detailed evaluation of the nature of brecciation and crystallization of polyphase dolomites, dolomitic limestones, limestones and marble, under the influences of episodic faulting, is associated with the regional structural geology with emphasis on pre-existing fault reactivations, granitic emplacement and progressive thermal influence. Supply of Mg 2+ from the host rock for dolomitization, limited and episodic influx of circulating fluids and cessation of thermo-tectonic evolution with progressive cooling are also inferred. Correlating the geological events in western Peninsular Malaysia with regional structural dynamics reveals that the major deformation episodes exerted first order controls on the loci of dolomite occurrences. The occurrence, geometry and structural relationships of the dolomites were controlled by successive magmatic events, whereas, the intensity of replacement dolomitization was controlled by host rock texture and varied bulk chemistry, together with the nature of circulating fluids. © 2019
format Article
author Ramkumar, M.
Siddiqui, N.A.
Mathew, M.
Sautter, B.
Hui, P.X.
Nagarajan, R.
Breitfeld, H.T.
Santosh, M.
Menier, D.
Poppelreiter, M.
spellingShingle Ramkumar, M.
Siddiqui, N.A.
Mathew, M.
Sautter, B.
Hui, P.X.
Nagarajan, R.
Breitfeld, H.T.
Santosh, M.
Menier, D.
Poppelreiter, M.
Structural controls on polyphase hydrothermal dolomitization in the Kinta Valley, Malaysia: Paragenesis and regional tectono-magmatism
author_sort Ramkumar, M.
title Structural controls on polyphase hydrothermal dolomitization in the Kinta Valley, Malaysia: Paragenesis and regional tectono-magmatism
title_short Structural controls on polyphase hydrothermal dolomitization in the Kinta Valley, Malaysia: Paragenesis and regional tectono-magmatism
title_full Structural controls on polyphase hydrothermal dolomitization in the Kinta Valley, Malaysia: Paragenesis and regional tectono-magmatism
title_fullStr Structural controls on polyphase hydrothermal dolomitization in the Kinta Valley, Malaysia: Paragenesis and regional tectono-magmatism
title_full_unstemmed Structural controls on polyphase hydrothermal dolomitization in the Kinta Valley, Malaysia: Paragenesis and regional tectono-magmatism
title_sort structural controls on polyphase hydrothermal dolomitization in the kinta valley, malaysia: paragenesis and regional tectono-magmatism
publishDate 2019
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85061442212&doi=10.1016%2fj.jseaes.2019.02.004&partnerID=40&md5=46c6863596704e00eb2dbeb1d300774e
http://eprints.utp.edu.my/22254/
_version_ 1741196592421011456
score 11.62408

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