TY - JOUR
T1 - Reykjanes Mantle Convection and Climate
T2 - Crustal Objectives
AU - the Expedition 395 Scientists
AU - Parnell-Turner, Ross E.
AU - Briais, Anne R.
AU - LeVay, Leah J.
AU - Cui, Ying
AU - Di Chiara, Anita
AU - Dodd, Justin P.
AU - Eason, Deborah E.
AU - Friedman, Sarah A.
AU - Hochmuth, Katharina E.
AU - Karatsolis, Boris T.
AU - LeBlanc, Danielle E.
AU - Lindsay, Melody R.
AU - McNamara, David D.
AU - Modestou, Sevasti E.
AU - Murton, Bramley
AU - O’Connell, Suzanne B.
AU - Pasquet, Gabriel T.
AU - Pearson, Paul N.
AU - Qian, Sheng Ping
AU - Rosenthal, Yair
AU - Satolli, Sara
AU - Cuevas, Jose M.
AU - Shamrock, Jamie L.
AU - Suzuki, Takuma
AU - Syed, Saalim M.
AU - White, Nicholas J.
AU - Yang, Alexandra Yang
N1 - Funding Information:
In March 2021, the JOIDES Resolution Facility Board, the JOIDES Resolution Science Operator (JRSO), and the National Science Foundation (NSF) decided to postpone International Ocean Discovery Program (IODP) Expedition 395 because of travel risks associated with the COVID-19 pandemic. Instead, IODP Expedition 395C was scheduled to undertake Expedition 395 operations that could be completed without a science party on board. These restrictions prevented the usual laboratory analysis and core description efforts. For example, it was not feasible to collect and analyze high-resolution ephemeral properties through the analysis and collection of interstitial pore water fluid samples or possible to generate the usual at-sea products such as a preliminary biostratigraphic age model. All core description will take place during a shore-based postcruise meeting. In light of these limitations, operational and laboratory objectives for Expedition 395C were adjusted so that they were achievable by the shipboard JRSO technical staff during a single expedition, with remote input from the scientific party.
Funding Information:
National Science Foundation (NSF), United States Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan European Consortium for Ocean Research Drilling (ECORD) Ministry of Science and Technology (MOST), People’s Republic of China Korea Institute of Geoscience and Mineral Resources (KIGAM) Australia-New Zealand IODP Consortium (ANZIC) Ministry of Earth Sciences (MoES), India
Funding Information:
This publication was prepared by the JOIDES Resolution Science Operator (JRSO) at Texas A&M University (TAMU) as an account of work performed under the International Ocean Discovery Program (IODP). This material is based upon work supported by the JRSO, which is a major facility funded by the National Science Foundation Cooperative Agreement Number OCE1326927. Funding for IODP is provided by the following international partners:
Publisher Copyright:
© 2022 Authors. All rights reserved.
PY - 2022/2/1
Y1 - 2022/2/1
N2 - The five primary sites proposed for International Ocean Discovery Program (IODP) Expedition 395, which was postponed because of the COVID-19 pandemic, were cored during IODP Expedition 395C. The Expedition 395C operations, shipboard measurements, and sampling were adjusted to account for the absence of a sailing science party. The Expedition 395/395C objectives are (1) to investigate temporal variations in ocean crust generation at the Reykjanes Ridge and test hypotheses for the influence of Iceland mantle plume fluctuations on these processes, (2) to analyze sedimentation rates at the Björn and Gardar contourite drifts, as proxies for Cenozoic variations of North Atlantic deepwater circulation, and for uplift and subsidence of the Greenland-Scotland Ridge gateway related to plume activity, and (3) to analyze the alteration of oceanic crust and its interaction with seawater and sediments. During Expedition 395C, basalt cores were collected at four sites: U1554, U1555, U1562, and U1563. Sediment cores were also collected from these sites as well as from Site U1564, and casing was installed to 602 m at Site U1554. The amount of recovered cores, their preliminary descriptions, and the analyses of shipboard samples show that the results of Expedition 395C will fulfill a significant part of the Expedition 395 objectives. Basalts were collected from two V-shaped ridge and trough pairs, which will allow the investigation of the variability in mantle source and temperature causing this ridge/trough pattern. Basalt cores span an expected age range of 2.8–13.9 Ma, which will allow us to investigate the hydrothermal weathering processes. Sediments from the Björn drift were cored to basement, along with the uppermost 600 m of sediments from the Gardar drift. The data provided by Expedition 395C are a major advancement in achieving the work of Expedition 395.
AB - The five primary sites proposed for International Ocean Discovery Program (IODP) Expedition 395, which was postponed because of the COVID-19 pandemic, were cored during IODP Expedition 395C. The Expedition 395C operations, shipboard measurements, and sampling were adjusted to account for the absence of a sailing science party. The Expedition 395/395C objectives are (1) to investigate temporal variations in ocean crust generation at the Reykjanes Ridge and test hypotheses for the influence of Iceland mantle plume fluctuations on these processes, (2) to analyze sedimentation rates at the Björn and Gardar contourite drifts, as proxies for Cenozoic variations of North Atlantic deepwater circulation, and for uplift and subsidence of the Greenland-Scotland Ridge gateway related to plume activity, and (3) to analyze the alteration of oceanic crust and its interaction with seawater and sediments. During Expedition 395C, basalt cores were collected at four sites: U1554, U1555, U1562, and U1563. Sediment cores were also collected from these sites as well as from Site U1564, and casing was installed to 602 m at Site U1554. The amount of recovered cores, their preliminary descriptions, and the analyses of shipboard samples show that the results of Expedition 395C will fulfill a significant part of the Expedition 395 objectives. Basalts were collected from two V-shaped ridge and trough pairs, which will allow the investigation of the variability in mantle source and temperature causing this ridge/trough pattern. Basalt cores span an expected age range of 2.8–13.9 Ma, which will allow us to investigate the hydrothermal weathering processes. Sediments from the Björn drift were cored to basement, along with the uppermost 600 m of sediments from the Gardar drift. The data provided by Expedition 395C are a major advancement in achieving the work of Expedition 395.
UR - http://www.scopus.com/inward/record.url?scp=85140460874&partnerID=8YFLogxK
U2 - 10.14379/iodp.pr.395C.2022
DO - 10.14379/iodp.pr.395C.2022
M3 - Article
AN - SCOPUS:85140460874
SN - 2372-9562
VL - 395
JO - International Ocean Discovery Program: Preliminary Reports
JF - International Ocean Discovery Program: Preliminary Reports
ER -