Late Quaternary depositional history of the Reuss delta, Switzerland: constraints from high-resolution seismic reflection and georadar surveys

2002 ◽  
Vol 17 (2) ◽  
pp. 131-143 ◽  
Author(s):  
Frank O. Nitsche ◽  
Alan G. Green ◽  
Heinrich Horstmeyer ◽  
Frank Büker
Keyword(s):  
High Resolution ◽  
Seismic Reflection ◽  
Late Quaternary ◽  
Depositional History ◽  
History Of

High-resolution seismic imaging reveals infill history of a submerged Quaternary fjord system in the subantarctic Auckland Islands, New Zealand

2019 ◽  
Vol 93 ◽  
pp. 255-266 ◽  
Author(s):  
Edward J. Perkins ◽  
Andrew R. Gorman ◽  
Emily J. Tidey ◽  
Gary S. Wilson ◽  
Christian Ohneiser ◽  
...  
Keyword(s):  
High Resolution ◽  
Environmental Changes ◽  
High Surface ◽  
Leeward Side ◽  
Surface Erosion ◽  
Depositional History ◽  
Fluvial Erosion ◽  
Erosion Rates ◽  
Subantarctic Islands ◽  
History Of

AbstractQuaternary processes and environmental changes are often difficult to assess in remote subantarctic islands due to high surface erosion rates and overprinting of sedimentary products in locations that can be a challenge to access. We present a set of high-resolution, multichannel seismic lines and complementary multibeam bathymetry collected off the eastern (leeward) side of the subantarctic Auckland Islands, about 465 km south of New Zealand's South Island. These data constrain the erosive and depositional history of the island group, and they reveal an extensive system of sediment-filled valleys that extend offshore to depths that exceed glacial low-stand sea level. Although shallow, marine, U-shaped valleys and moraines are imaged, the rugged offshore geomorphology of the paleovalley floors and the stratigraphy of infill sediments suggests that the valley floors were shaped by submarine fluvial erosion, and subsequently filled by lacustrine, fjord, and fluvial sedimentary processes.

Late-Quaternary lowstands of lake Bosumtwi, Ghana: evidence from high-resolution seismic-reflection and sediment-core data

2005 ◽  
Vol 216 (3-4) ◽  
pp. 235-249 ◽  
Author(s):  
Keely Brooks ◽  
Christopher A. Scholz ◽  
John W. King ◽  
John Peck ◽  
Jonathan T. Overpeck ◽  
...  
Keyword(s):  
High Resolution ◽  
Sediment Core ◽  
Seismic Reflection ◽  
Late Quaternary ◽  
Core Data
Sign in / Sign up

Export Citation Format

Share Document