The early Danian hyperthermal event at Boltysh (Ukraine); relation to Cretaceous-Paleogene boundary events

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doi: 10.1130/2014.2505(06)
Author(s): Gilmour, Iain; Jolley, David; Kemp, David; Kelley, Simon; Gilmour, Mabs; Daly, Rob; Widdowson, Mike
Author Affiliation(s): Primary:
Open University, Centre for Earth, Planetary, Space and Astronomical Research, Milton Keynes, United Kingdom
Other:
Cardiff University, United Kingdom
Kings College, United Kingdom
Volume Title: Volcanism, impacts, and mass extinctions; causes and effects
Volume Author(s): Keller, Gerta, editor; Kerr, Andrew C.
Source: Volcanism, impacts, and mass extinctions; causes and effects, edited by Gerta Keller and Andrew C. Kerr. Special Paper - Geological Society of America, Vol.505, p.133-146. Publisher: Geological Society of America (GSA), Boulder, CO, United States. ISSN: 0072-1077 CODEN: GSAPAZ
Note: In English. 57 refs.; illus., incl. 1 table, sect.
Summary: The Boltysh meteorite impact crater formed in the Ukrainian Shield on the margin of the Tethys Ocean a few thousand years before the Cretaceous-Paleogene boundary and was rapidly filled by a freshwater lake. Sediments filling the lake vary from early lacustrine turbidites and silts to approximately 300 m of fine silts, organic carbon-rich muds, oil shales, and lamenites that record early Danian terrestrial climate signals at high temporal resolution. Combined carbon isotope and palynological data show that the fine-grained organic carbon-rich lacustrine sediments preserve a uniquely complete and detailed negative carbon isotope excursion in an expanded section of several hundred meters. The position of the carbon isotope excursion in the early Danian stage of the Paleogene period, around 200 k.y. above the Cretaceous-Paleogene boundary, leads us to correlate it to the Dan-C2 carbon isotope excursion recorded in marine sediments of the same age. The more complete Boltysh carbon isotope excursion record indicates a δ13C shift of around -3 per mil, but also a more extended recovery period, strikingly similar in pattern to the highest fidelity carbon isotope excursion records available for the Toarcian and Paleocene-Eocene hyperthermal events. Changes in floral communities through the carbon isotope excursion recorded at Boltysh reflect changing biomes caused by rapidly warming climate, followed by recovery, indicating that this early Danian hyperthermal event had a similar duration to the Toarcian and Paleocene-Eocene events.
Year of Publication: 2014
Research Program: DSDP Deep Sea Drilling Project
IPOD International Phase of Ocean Drilling
ODP Ocean Drilling Program
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Aliphatic hydrocarbons; Alkanes; Atlantic Ocean; Biomes; Blake Nose; Blake Plateau; Boltyshka Depression; C-13/C-12; Carbon; Carbon cycle; Carbon isotope excursion; Cenozoic; Chicxulub Crater; Climate change; Commonwealth of Independent States; Cores; Correlation; Crater lakes; Cretaceous; DSDP Site 527; DSDP Site 528; Danian; Deccan Traps; Deep Sea Drilling Project; Europe; Floral studies; Foraminifera; Geochemical cycle; Global change; Global warming; Hydrocarbons; Hyperthermal events; IPOD; Impact craters; Impact features; Invertebrata; Isotope ratios; Isotopes; Jurassic; K-T boundary; Lacustrine environment; Lake sediments; Lakes; Leg 171B; Leg 74; Lithostratigraphy; Lower Jurassic; Lower Paleocene; Marine sediments; Mesozoic; Meteor craters; Methane; Microfossils; Nannoplankton; North Atlantic; ODP Site 1049; Ocean Drilling Program; Organic carbon; Organic compounds; Paleocene; Paleocene-Eocene Thermal Maximum; Paleoclimatology; Paleoenvironment; Paleogene; Palynomorphs; Plankton; Protista; Regional; Russian Platform; Sedimentary rocks; Sediments; South Atlantic; Spectral analysis; Stable isotopes; Statistical analysis; Stratigraphic boundary; Tertiary; Tethys; Toarcian; Total organic carbon; Ukraine; Ukrainian Shield; Upper Cretaceous; Volcanism; Walvis Ridge
Coordinates: S280230 S280229 E0014549 E0014547
S283130 S283129 E0021927 E0021926
N300832 N300832 W0760644 W0760644
Record ID: 2014085275
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States