Showing papers by "R. Stephen J. Sparks published in 2020"
TL;DR: The VOLCORE (Volcanic Core Records) database is a collection of 34,696 visible tephra occurrences reported in the initial reports volumes of all of the Deep Sea Drilling Project, which can be used as a starting point for studies of tephrochronology, volcanology, geochemistry, studies of sediment transport and palaeoclimatology.
Abstract: The VOLCORE (Volcanic Core Records) database is a collection of 34,696 visible tephra (volcanic ash and lithological or grain size variations) occurrences reported in the initial reports volumes of all of the Deep Sea Drilling Project (DSDP; 1966-1983), the Ocean Drilling Program (ODP; 1983-2003), the Integrated Ocean Drilling Program (IODP; 2003-2013) and the International Ocean Discovery Program (IODP; 2013-present) up to and including IODP Expedition 381. The combined international ocean drilling programmes (OD) have locations with global coverage. Cored tephra layers and tephra-bearing sediments span timescales from recent to ~150 million years in age. This database is a collection of information about reported visible tephra layers entirely or predominantly composed of volcanic ash. Data include the depth below sea floor, tephra thickness, location, and any reported comments. An approximate age was estimated for most (29,493) of the tephra layers using published age-depth models. The database can be used as a starting point for studies of tephrochronology, volcanology, geochemistry, studies of sediment transport and palaeoclimatology.
8 citations
TL;DR: In this paper, a remotely-operated vehicle (ROV) has been used to collect carbonate hardgrounds from the slopes of seamounts in the Mediterranean Sea, and from the nearby Kick'em Jenny submarine volcano off Grenada.
6 citations
TL;DR: In this paper, the authors used zircon double-dating by (U-Th)/He and U-Th disequilibrium methods, major and trace element tephra glass geochemistry, and probabilistic modeling of tectra dispersal in an attempt to characterize all major late Quaternary proximal tephras of Mt. Erciyes and to correlate them with distal deposits.
6 citations