Abstracts

• 11668 A 100 Million-Year Record of Sea-Level and Ice-Volume Variations from Continental Margin and Deep Sea Isotopic Records This lecture presents a history of sea-level changes focusing on the last 100 Myr. Prior to the Oligocene (ca. 33.5 Ma), the Earth had been a warm, high CO2 Greenhouse world that was largely ice-free back to 260 Ma, though recent evidence suggests that 15-25 m sea-level changes observed may have been caused by growth and decay of small, ephemeral ice sheets. The growth and decay of a continental scale ice sheet in Antarctica caused 50-60 m variations on the 106 yr scale beginning ~33.5 million years ago (Ma). A 100 Million-Year Record of Sea-Level and Ice-Volume Variations from Continental Margin and Deep Sea Isotopic Records
  A 100 Million-Year Record of Sea-Level and Ice-Volume Variations from Continental Margin and Deep Sea Isotopic Records
• 11666 A Geological Perspective on Sea-level Rise and Its Impacts: Past, present and future The geologic record places the modern sea-level rise into an historical context and can help inform discussions of the rates and magnitudes of future sea-level rise. With the development of large Northern Hemisphere ice sheets at 2.7 Ma, amplitudes of sea-level change increased, reaching over 100 m at times. A globally average sea-level rise of ~130 m followed the last ice age. We construct 21st century relative sea-level rise scenarios including global, regional, and local processes and project a 22 cm rise at bedrock locations by 2030. A Geological Perspective on Sea-level Rise and Its Impacts: Past, present and future
  A Geological Perspective on Sea-level Rise and Its Impacts: Past, present and future
• 11667 Sequence Stratigraphy of the New Jersey Miocene Transect: Back to basics IODP Expedition 313 (New Jersey shallow shelf) cored a 3-hole transect across Miocene seismic clinothems (prograding sigmoidal sequences) in topset, foreset, and bottomset locations, providing an opportunity to integrate seismic, log, and core data into a sequence stratigraphic framework. Our interpretations of sequences and systems tracts are made independent of any preconceived relative sea-level curves. Rather, we use basic seismic, core, and stratigraphic principles to recognize sequence boundaries, Maximum Flooding Surface, transgressive surfaces, and facies successions within sequences. Sequence Stratigraphy of the New Jersey Miocene Transect: Back to basics
  Sequence Stratigraphy of the New Jersey Miocene Transect: Back to basics