Fauzie Hasibuan
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Ostrea (Turkostrea) Doidoiensis Hasibuan from The Bayah Formation West Jawa: A New Find Fauzie Hasibuan
Jurnal Geologi dan Sumberdaya Mineral Vol. 16 No. 1 (2006): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33332/jgsm.geologi.v16i1.350

Abstract

A species of Ostreidae conspecific with Ostrea (Turkostrea) doidoiensis Hasibuan from the Middle Eocene Malawa Formation, South SuIawesi, was also discovered from Bayah Formation, Banten, West Jawa. A juvenile form of the taxon is thought to occur in the Nanggulan Formation, Central Jawa, Correlation of the  age of the formations is considered. Paleoenvironmental implication of the taxon and its distribution in  Indonesia are discussed.Keywords: Ostrea (Turkostrea) doidoensis, Bayah formation, Malawa formation, Middle Eocene, RV (right valve). LV (left valve)
The Age And Paleoenvironment of The Pakaurangi Formation, Waitakere Group, Northland, New Zealand, Based on Ostracoda Fauzie Hasibuan; A.R Hasibuan; Sudijono Sudijono
Jurnal Geologi dan Sumberdaya Mineral Vol. 16 No. 5 (2006): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33332/jgsm.geologi.v16i5.373

Abstract

The Early Miocene Pakaurangi Formation, Waitakere Group, have a high diversity of Ostracoda. Key species include Loxoconcha propunctata, Bradleya semiarata, Bradleya lactea pakaurangia, Hemycythere tarakohensis and Bairdia canterburyensis, and indicate an Altonian age, completely in agreement with foraminiferal ages from this area by other workers.The species Trachyleberis zeacristata Hornibrook is transferred to Henryhowella. Paijenborchella iocosa Kingma, and many generic level taxa were also found in a borehole in Bojonegoro, East Jawa, Indonesia. The previously recorded Clifdenian to Waitotaran range of Henryhowella probesioides Hornibrook is extended downwards into the Altonian. The Ostracoda also show the paleoenvironment of the Pakaurangi Formation to be littoral to neritic, which is also in agreement with the evidence of foraminifera and molluscs as reported by previous workers. Keywords: Ostracoda, Pakaurangi Formation, Waitakere Group, Altonian, New Zealand