8 documents found, page 1 of 1
Anomalous widespread arid events in Asia over the past 550,000 years
Carrasqueira, Igor Gustavo da Fonseca; Jovane, Luigi; Droxler, André W; Alvarez Zarikian, Carlos A; Lanci, Luca; Alonso-Garcia, MontserratRecords of element ratios obtained from the Maldives Inner Sea sediments provide a detailed view on how the Indian Monsoon System has varied at high-resolution time scales. Here, we present records from International Ocean Discovery Program (IODP) Site U1471 based on a refined chronology through the past 550,000 years. The record's high resolution and a proper approach to set the chronology allowed us to recons...
Ostracod response to monsoon and OMZ variability over the past 1.2 Myr
Alvarez Zarikian, Carlos A.; Nadiri, Chimnaz; Alonso-Garcia, Montserrat; Rodrigues, Teresa; Huang, Huai-Hsuan M.; Lindhorst, SebastianWe present the first continuous middle through late Pleistocene record of fossil ostracods from the Maldives in the northern Indian Ocean, derived from sediment cores taken at Site U1467 by Expedition 359 of the International Ocean Discovery Program (IODP). Site U1467 lies at 487 m water depth in the Inner Sea of the Maldives archipelago, an ideal place for studying the effects of the South Asian Monsoon (SAM) ...
Cyclic anoxia and organic rich carbonate sediments within a drowned carbonate p...
Swart, Peter K.; Blattler, Clara L.; Nakakuni, Masatoshi; Mackenzie, Greta J.; Betzler, Christian; Eberli, Gregor P.; Reolid, JesusThis paper reports on the newly discovered occurrence of thick sequences (similar to 100 m) of Late Oligocene and Early Miocene (similar to 24.9 to similar to 20 Ma) interbedded organic-rich sediments (sapropels) and pelagic (organic poor) carbonates at Sites 01466 and U1468 drilled in the Maldives archipelago during the International Ocean Discovery Program (IODP) Expedition 359. This occurrence is unusual in ...
Correction to: A two million year record of low-latitude aridity linked to cont...
Kunkelova, Tereza; Jung, Simon J. A.; de Leau, Erica S.; Odling, Nick; Thomas, Alex L.; Betzler, Christian; Eberli, Gregor P.In the original version of this article (Kunkelova et al. 2018), published on 18 December 2018, there was 1 error in the author name of Dr. Yu.
Magnetic properties of early Pliocene sediments from IODP Site U1467 (Maldives ...
Lanci, Luca; Zanella, Elena; Jovane, Luigi; Galeotti, Simone; Alonso-Garcia, Montserrat; Alvarez-Zarikian, Carlos A.; Bejugam, Nagender NathWe report a study of the magnetic stratigraphy and the anisotropy of isothermal remanent magnetization of Pliocene sediments from International Ocean Discovery Program (IODP) Site U1467 drilled in the Maldives platform (Indian Ocean) during Exp. 359. Magnetic stratigraphy gives a precise record of geomagnetic reversals of the early Pliocene from approximately 5.3 Ma to 3.1 Ma providing a detailed age model in a...
Dataset of characteristic remanent magnetization and magnetic properties of ear...
Lanci, Luca; Zanella, Elena; Jovane, Luigi; Galeotti, Simone; Alonso-Garcia, Montserrat; Alvarez-Zarikian, Carlos A.; Bejugam, Nagender NathThis data article describes data of magnetic stratigraphy and anisotropy of isothermal remanent magnetization (AIRM) from "Magnetic properties of early Pliocene sediments from IODP Site U1467 (Maldives platform) reveal changes in the monsoon system" [1]. Acquisition of isothermal magnetization on pilot samples and anisotropy of isothermal remanent magnetization are reported as raw data; magnetostratigraphic dat...
A two million year record of low-latitude aridity linked to continental weather...
Kunkelova, Tereza; Jung, Simon J. A.; de Leau, Erica S.; Odling, Nick; Thomas, Alex L.; Betzler, Christian; Eberli, Gregor P.Indian-Asian monsoon has oscillated between warm/wet interglacial periods and cool/dry glacial periods with periodicities closely linked to variations in Earth’s orbital parameters. However, processes that control wet versus dry, i.e. aridity cyclical periods on the orbital time-scale in the low latitudes of the Indian-Asian continent remain poorly understood because records over millions of years are scarce. T...
The abrupt onset of the modern South Asian Monsoon winds
Betzler, Christian; Eberli, Gregor P.; Kroon, Dick; Wright, James D.; Swart, Peter K.; Nath, Bejugam Nagender; Alvarez-Zarikian, Carlos A.The South Asian Monson (SAM) is one of the most intense climatic elements yet its initiation and variations are not well established. Dating the deposits of SAM wind-driven currents in IODP cores from the Maldives yields an age of 12.9 Ma indicating an abrupt SAM onset, over a short period of 300 kyrs. This coincided with the Indian Ocean Oxygen Minimum Zone expansion as revealed by geochemical tracers and the ...