Relationship of Biometrical Aspect of Turritellidae with Geochronological Aspect in West Java
- 1 Department of Geology, Institute of Technology Bandung, Sekolah Tinggi Teknologi Nasional, Yogyakarta, Indonesia
- 2 Department of Geology, Institute of Technology, Bandung, Indonesia
- 3 Department of Geology, Institute of Technology, Bandung, Indonesia
- 4 Department of Geology, Institute of Technology, Bandung, Indonesia
Abstract
Mollusk paleontology research in Indonesia so far has not been widely utilized in various kinds of applications, espe cially in the geology. Although mollusk in Java is very rich, the study of correlation between mollusk appearances with geological condition is rare . This study aimed to determine Turritellidae base on morphological observations (qualita tive) and quantitative (biometric method). The ultimate goal is to find out the relationship between of biometrical aspect of Turritellidae with geological development especially of chronological conditions. Stratigraphic analysis and sampling have done at five location of field survey. Site selection was based on the type locality of mollusk biostratigraphic unit arrange by Martin (1919) [1] and Oostingh (1938) [2]. The scattered analysis shows two large distribution of consistent groups based on shell size and geochronological aspect. Biometrical aspec t of Turritellidae is reflection of the chrono logical aspect in West Java. Small size was appearance in Upper Miocene to Lower Pliocene and large shell in Pliocene to Pleistocene.
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