The Taku Schist, which is located in the north-east Peninsular Malaysia, is characterized by its North-South oriented elongated body. It forms part of the Indonesian orogenic build-up that was generated via the convergence of the Sibumasu continental unit and Sukhothai Arc. Subsequent petrography analyses of the metasedimentary rocks sourced from the Taku Schist revealed that their formation was attributable to the metamorphism of greenschist into amphibolite facies, which could be observed near the Triassic and Cretaceous intrusions of the Kemahang Granite. The evolutionary process of the rocks could be linked with the interactions occurring between contact and regional metamorphisms. The resulting chemical classification upon their assessment disclosed that the metasedimentary rocks of Taku Schist were made up of greywacke and shale, grouped into the quartzose sedimentary provenance, and belonged to the Continental Island Arc (CIA). This information is required for the tectonic setting discrimination purpose. It is a reflection of the episodic contractions underwent by the Taku Schist, wherein they would lead to the Sibumasu sedimentary cover along with both an accretionary wedge and the genetically-correlated Bentong-Raub melange to different greenschist. Otherwise associated with amphibolite facies, the conditions and depths of the facies were determined according to their position in relation to the upper plate of the Sukhothai Arc.
The rock formation of late Cretaceous–Paleocene granite, metapsammite, and metagranite found across Luk Ulo Complex indicated boulders with diameter of approximately one meter and rounded shape along Luk Ulo River, Indonesia. However, less research found on geochronology and geochemistry has been conducted in study area, and such rocks require comprehensive understanding of magmatism and tectonic environment of Central Java, Indonesia. Therefore, the main objective of this study is to address the geochronological and geochemical age histories across Central Java, Indonesia using U-Pb zircon dating technique. Generally, most common types of rocks were observed which composed of hornblende and garnet-bearing granite, metapsammite, and metagranite. The geochemical study showed that protolith of rocks with hornblende was identified as Cordilleran granitoid (I-type), which originated from magmatic arc with basaltic differentiation. Further, protolith of rocks containing garnet was categorized as Caledonian granitoid (S-type), which is caused by post-collisional orogeny. The cluster observations of magmatic zircons reveal their magmatic ages, which vary from 67.00 + 1.2 to 69.10 + 0.91 Ma (late Cretaceous), whereas ages of inherited zircons ranged from 100 + 5 to 437 + 13 Ma (early Cretaceous to Silurian). Estimated periods of partial melting were found between 100–5 Ma and 118–4 Ma (early Cretaceous). Comparing the zircon ages of Luk Ulo with the zircon ages from the Sundaland regions reveals that the age distribution patterns are incredibly similar; the peak ages dispersed between the Cretaceous and Triassic periods, as well as Sundaland region was the source of the materials.
The rock formation of late Cretaceous-Paleocene granite, metapsammite, and metagranite found across Luk Ulo Complex indicated boulders with diameter of approximately one meter and rounded shape along Luk Ulo River, Indonesia. However, less research found on geochronology and geochemistry has been conducted in study area, and such rocks require comprehensive understanding of magmatism and tectonic environment of Central Java, Indonesia. Therefore, the main objective of this study is to address the geochronological and geochemical age histories across Central Java, Indonesia using U-Pb zircon dating technique. Generally, most common types of rocks were observed which composed of hornblende and garnet-bearing granite, metapsammite, and metagranite. The geochemical study showed that protolith of rocks with hornblende was identi ed as Cordilleran granitoid (I-type), which originated from magmatic arc with basaltic differentiation. Further, protolith of rocks containing garnet was categorized as Caledonian granitoid (S-type), which is caused by post-collisional orogeny. The cluster observations of magmatic zircons reveal their magmatic ages, which vary from 67.00 + 1.2 to 69.10 + 0.91 Ma (late Cretaceous), whereas ages of inherited zircons ranged from 100 + 5 to 437 + 13 Ma (early Cretaceous to Silurian). Estimated periods of partial melting were found between 100-5 Ma and 118-4 Ma (early Cretaceous). Comparing the zircon ages of Luk Ulo with the zircon ages from the Sundaland regions reveals that the age distribution patterns are incredibly similar; the peak ages dispersed between the Cretaceous and Triassic periods, as well as Sundaland region was the source of the materials.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.