Geology

Filter Total Items: 352
Date published: August 14, 2020
Status: Active

Cascadia Subduction Zone Marine Geohazards

Societal Issue: Uncertainty related to rupture extent, slip distribution, and recurrence of past subduction megathrust earthquakes in the Pacific Northwest (northern CA, OR, WA, and southern BC) leads to ambiguity in earthquake and tsunami hazard assessments and hinders our ability to prepare for future events.

Date published: August 13, 2020
Status: Active

PCMSC MarFac Field Equipment and Capabilities

Learn about the USGS Pacific Coastal and Marine Science Center field equipment

Date published: August 13, 2020
Status: Active

SWATHplus 234kHz

The ITER Systems SWATHplus 234 kHz is an interferometric bathymetric survey tool for surveys in water depths from 1 to 200 meters.

Date published: August 11, 2020
Status: Active

Smith-McIntyre grab sampler

The Smith-McIntyre grab sampler, nicknamed the Smith-Mac, scoops up sediment from any water depth.

Date published: August 11, 2020
Status: Active

Reson 7111 Multibeam Echosounder System

The Teledyne Reson 7111 is a multibeam echosounder system that produces bathymetry, or depth, data in deep water.

Date published: August 11, 2020
Status: Active

Samples Repository

Since 2002, the Woods Hole Coastal and Marine Science Center’s Samples Repository (WHCMSC) has been supporting research by providing secure storage for geological, biological, and geochemical samples; maintaining organization and an active inventory of these sample collections; as well as by providing access to these collections for study and reuse.

Date published: July 28, 2020
Status: Active

Task 4-Synthesis of Michigan, Illinois, and Appalachian Basin Stratigraphy

The objective of Task 4 is to develop an improved understanding of the lithostratigraphic framework of the Michigan, Illinois, and Appalachian Basins, with specific emphasis on how the lithologic characteristics of strata that accumulate in a sedimentary basin have been controlled by variations in tectonics, sea level, and climate.  The resulting improved understanding of stratigraphy will aid...

Date published: July 28, 2020
Status: Active

Task 3-Coastal Transect Mapping and Landform Change

The area encompassed by Task 3 includes various coastal regions of the Great Lakes, with initial focus on several sites with coastal erosion hazards along the east margin of Lake Michigan.

The objectives of Task 3 are listed as follows:

1) Improve automatic procedures of extracting cliff tops and toes;

2) Conduct sensitivity assessment of the automatic procedure of...

Date published: July 28, 2020
Status: Active

Task 2-Quaternary Geologic Mapping and Subsurface Correlation

The area encompassed by Task 2 includes various regions on the margins of the Great Lakes, with initial focus on: (1) several counties along the east margin of Lake Michigan (Leelanau, Benzie, Manistee, and Mason Counties of Michigan); and (2) Berrien County of southwestern Michigan.  The primary objective of Task 2 is to produce a seamless, zoomable geologic framework map geodatabase in GeMS...

Date published: July 28, 2020
Status: Active

Task 1-Grand Traverse Bay Quaternary Geologic Mapping

The area encompassed by Task 1 includes the counties around Grand Traverse Bay in Michigan, with focus on Grand Traverse, Antrim, Charlevoix, and Emmet Counties.  The primary objective of Task 1 is to produce a seamless, zoomable geologic framework map geodatabase in GeMS format that includes the following data: Quaternary surficial map units on the basis of new LiDAR data; Quaternary sediment...

Date published: July 28, 2020
Status: Active

U.S. West Coast and Alaska Marine Geohazards

Marine geohazards are sudden and extreme events beneath the ocean that threaten coastal populations. Such underwater hazards include earthquakes, volcanic eruptions, landslides, and tsunamis.

Devastating earthquakes in Japan (2011) and Chile (2010) that spawned pan-oceanic tsunamis sent a sobering reminder that U.S. coastlines are also vulnerable to natural disasters that originate in...

Date published: July 28, 2020
Status: Active

Great Lakes Geologic Mapping Project

Great Lakes Geologic Mapping Project