IODP 371考察早始新世至早中新世磁地层格架(塔斯曼前沿俯冲起始与古近系气候)

IF 2.1 3区地球科学 Q1 GEOLOGY Newsletters on Stratigraphy Pub Date : 2020-09-17 DOI:10.1127/nos/2019/0556

E. Dallanave, Liao Chang

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引用次数: 2

摘要

第3周开始时，286 nmi中的最后245 nmi转运至U1507站点（拟建NCTN8A站点）。我们于8月6日22时抵达。在降低推进器并切换到动态定位（DP）模式后，钻台被清理以进行操作，在2225小时开始U1507A孔。钻井队在8月7日0130小时前组装了一个先进的活塞取芯器（APC）/延长取芯筒（XCB）底部钻具组合（BHA），拿起钻杆和顶部驱动器，并将钻头部署在海底上方。一个擦拭器“清管器”被泵入钻柱，以清除潜在的碎屑。用岩心衬管对非磁性APC岩心筒进行修整，以准备在1040小时开钻U1507A孔。

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Early Eocene to early Miocene magnetostratigraphic framework for IODP Expedition 371 (Tasman Frontier Subduction Initiation and Paleogene Climate)

Week 3 began with the final 245 nmi of the 286 nmi transit to Site U1507 (proposed Site NCTN8A). We arrived at 2200 h on 6 August. After lowering the thrusters and switching to dynamic positioning (DP) mode, the rig floor was cleared for operations, beginning Hole U1507A at 2225 h. The rig crew assembled an advanced piston corer (APC)/extended core barrel (XCB) bottom-hole assembly (BHA) by 0130 h on 7 August, picked up drill pipe and the top drive, and deployed the bit just above the seafloor. A wiper “pig” was pumped through the drill string to clean out potential debris. The nonmagnetic APC core barrels were dressed with core liners in preparation to spudding Hole U1507A at 1040 h.

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来源期刊

Newsletters on Stratigraphy 地学-地质学

CiteScore

5.50

自引率

4.50%

发文量

审稿时长

>12 weeks

期刊介绍： Newsletters on Stratigraphy is an international, peer-reviewed journal with a focus on stratigraphic issues that are relevant for a broad geoscientific community. Papers published in Newsletters on Stratigraphy use (and ideally integrate) stratigraphic methodologies from a wide field of disciplines, including (but not limited to) biostratigraphy, chronostratigraphy, chemostratigraphy, and magnetostratigraphy. The results have implications for paleogeographic reconstructions, paleoceanography, paleoclimate, biotic evolution, basin development, or regional and supraregional correlation. Papers published in Newsletters on Stratigraphy comprise original research articles, background information on ongoing work of e.g., the International Stratigraphic Commission (ICS) and the International Subcommission on Stratigraphic Classification (ISSC), and review articles. There are no page charges for the publication of regular papers.