Sediment Grain-Size Data from Sediment Samples Collected in March and September 2012 from the Northern Chandeleur Islands, Louisiana (U.S. Geological Survey Field Activity Numbers 12BIM01 and 12LGC02)
type: Dataset
description: As part of the Barrier Island Evolution Research (BIER) project, scientists from the U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center (SPCMSC) collected sediment samples from the northern Chandeleur Islands in March and September 2012. The overall objective of this project, which integrates geophysical (bathymetric, seismic, and topographic) and sedimentologic data, is to better understand the depositional and erosional processes that drive the morphologic evolution of barrier islands over annual to interannual timescales (1 to 5 years). Between June 2010 and April 2011, in response to the Deepwater Horizon oil spill, the State of Louisiana constructed a sand berm extending more than 14 kilometers (km) along the northern Chandeleur Islands platform. The construction of the berm provided a unique opportunity to investigate how this new sediment source will interact with and affect the morphologic evolution of the barrier-island system. Data collected from this study will be used to describe differences in the physical characteristics and spatial distribution of sediments both along the axis of the berm and also along transects across the berm and onto the adjacent barrier island. Comparison of these data with data from subsequent sampling efforts will provide information about sediment interactions and movement between the berm and the natural island platform, improving our understanding of short-term morphologic change and processes in this barrier-island system. This data series serves as an archive of sediment data collected in March and September 2012 from the Chandeleur Islands sand berm and adjacent barrier-island environments. Data products, including descriptive core logs, core photographs and x-radiographs, results of sediment grain-size analyses, sample location maps, and Geographic Information System (GIS) data files with accompanying formal Federal Geographic Data Committee (FDGC) metadata, can be downloaded from https://pubs…
keyword: 12bim01
keyword: 12lgc02
keyword: amerigeo
keyword: amerigeoss
keyword: barrier-island-evolution-research-project
keyword: barrier-island-mapping
keyword: chandeleur-islands
keyword: ckan
keyword: geo
keyword: geology
keyword: geomorphology
keyword: geoscientificinformation
keyword: geoss
keyword: grab-sample
keyword: gradistat
keyword: grain-size
keyword: gulf-of-mexico
keyword: louisiana
keyword: national
keyword: north-america
keyword: oceans
keyword: push-core
keyword: sediment
keyword: u-s-geological-survey
keyword: unconsolidated-deposits
keyword: united-states
keyword: usgs
issued: 2025-11-22T16:26:51.974227
modified: 20201013
theme: {geospatial}
contact point: Organization
  fn: Julie Bernier
spatial: Location

US Migrating
type: Agent

Original Metadata
type: Distribution
description: The metadata original format
media type: text/xml
format: XML
access URL: https://data.usgs.gov/datacatalog/metadata/USGS.c4824230-81ef-4f72-9fff-c87fc981ab49.xml
issued: 2022-07-07T14:39:12.892412
modified: 2025-11-22T16:26:51.959387

Digital Data
type: Distribution
description: Landing page for access to the data
media type: application/http
format: XML
access URL: https://pubs.usgs.gov/ds/0850/downloads/grainsize_summary-statistics.zip
issued: 2022-07-07T14:39:12.892423
modified: 2025-11-22T16:26:51.959808