The Cenozoic geology of the Gisborne area (1:50 000 metric sheet Y18AB), North Island, New Zealand
The Cenozoic geology of the Gisborne area (1:50 000 metric sheet Y18AB), North Island, New Zealand
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新西兰北岛吉斯伯恩地区新生代地质(1:50 000 公制表 Y18AB)
DOI:
10.1080/00288306.1992.9514545
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发表时间:
1992
期刊:
影响因子:
--
通讯作者:
R. Bottrill
中科院分区:
文献类型:
--
作者:
G. Neef;R. Bottrill
Abstract Strata in the Gisborne area, North Island, New Zealand, are chiefly Neogene, whereas rafts of Cretaceous and Paleogene age crop out within diapirs which intrude the Neogene strata. The Cenozoic sequence commences with the Oligocene Weber Formation, Whangara Sandstone, and the Waiomoko Formation, which are followed by the early Miocene Whitiwhiti, Waremapou and Tuaheni Point Formations (which form the lower part of the Tolaga Group). The Tuaheni Point Formation was deposited from centripetal‐flowing turbidity currents within a small slope‐basin like those now present offshore. The upper part of the Tolaga Group, which is late Miocene to Pliocene in age, cannot be subdivided on lithology and it is mapped in stage units (Waiauan, Tongaporutuan, Kapitean, and Opoitian). However, locally distinctive rock types, defined within stages, are mapped as members. (Puketapu Tephra, Tarewarewa Sandstone, Pututahi Limestone, Papatu Sandstone and Waipura Sandstone). Like the early and mid‐Miocene strata, the Wai...