| Identifier | 1975-003-FA | ||||||||
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| Alternate names | ATL2 89-2; 89, Leg 2 | ||||||||
| Purpose | Conduct a geology and geophysics cruise along the Atlantic continental margin between Virginia and Cape Cod, concentrating on the continental shelf and slope between Virginia and Long Island where high-resolution seismic reflection profiling, vibracoring and bottom samples are needed for Bureau of Land Management (BLM) and USGS environmental impact studies in areas where petroleum lease sales are being considered. Single-channel seismic reflection profiles (airgun), gravity, and magnetics (Legs 1-3) programs for regional geologic resource assessment studies will also be conducted. | ||||||||
| Location | Atlantic outer continental shelf, United States, North America, North Atlantic; | ||||||||
| Summary | Collected high-resolution seismic profiles (Uniboom) and airgun profiles on the shelf and slope between Virginia and Long Island. | ||||||||
| Comments | No cruise report. Original Center People field also contained: Dick Edwards, Elaine Weed, and Julian Soren. Project = Geophysics of the Atlantic Outer Continental Shelf, Geophysics of the Atlantic Outer Continental Shelf' The alternate cruise designation is WHOI's name for the cruise, which represents the 89th cruise on the AII, not the year 1989. | ||||||||
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| Related activities |
1975-002-FA: Cruise legs |
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| Bounds |
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| Organization |
384 Woods Hole Road
Quissett Campus
Woods Hole, MA02543-1598
(508) 548-8700
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| Principal investigators | Robert N. Oldale | ||||||||||||||||||||
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| Affiliate staff | Dick Edwards, Elaine Weed, Julian Soren; WHOI: Stephen Gegg, Allan Gunderson, Jane Kroll |
| Data category: | Seismics, Sampling, Electro-Magnetic, Location-Elevation |
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| Data type: | Sub Bottom Profiler, Geology, Air Gun / Water Gun, Boomer, Sparker, Magnetics, Navigation |
| Equipment | Usage description | Data types | Datasets |
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| GeoPulse uniboom | Boomer | (no data reported) | |
| 3.5 kHz | Sub Bottom Profiler | 1 | |
| Alpine Vibracorer | Geology | (no data reported) | |
| Raytheon 3.5 kHz sonar (CESP II) system | Sub Bottom Profiler | (no data reported) | |
| Seismic Engineering streamer | Air Gun / Water Gun, Boomer, Sparker | 6 | |
| EG&G 234 | Boomer | (no data reported) | |
| Varian V-75 magnetometer | Magnetics | 1 | |
| Magnavox satellite positioning system | Navigation | (no data reported) | |
| Loran-C | Navigation | 5 |
| Dataset name | Equipment | Description | Dataset contact |
|---|---|---|---|
| 1975-003-FA-BA-001 | 3.5 kHz | Digital tape(s) of NV, NV,GR,BT,MG, NV,BT, GR,MG, GR-O/P FTCOPY, | Nancy K. Soderberg |
| 1975-003-FA-SE-001 | Seismic Engineering streamer | Collection of paper record displays of seismic data( AIR) for lines | Nancy K. Soderberg |
| 1975-003-FA-SE-002 | Seismic Engineering streamer | microfilm of | Nancy K. Soderberg |
| 1975-003-FA-SE-003 | Seismic Engineering streamer | analog tape of seismic data | Nancy K. Soderberg |
| 1975-003-FA-GP-001-01 | Varian V-75 magnetometer | Gravity and Magnetic data | Nancy K. Soderberg |
| 1975-003-FA-LN-001 | Loran-C | Navigation trackline plot for field activity 75003 | Nancy K. Soderberg |
| 1975-003-FA-LN-001-01 | Loran-C | Field Track Map for ATL2 89 Legs 1, 2 and 3 (pdf file) Field track map with irregular ticks. | Nancy K. Soderberg |
| 1975-003-FA-LN-001-02 | Loran-C | Trackmap for ATL2 89 Legs 1, 2 and 3 with dates and hour marks: .pdf format. | Alice M. Orton |
| 1975-003-FA-LN-001-03 | Loran-C | Trackmap for ATL2 89 Leg 2 with dates and hour marks: .pdf format; Inv. # TK00016. | Alice M. Orton |
| 1975-003-FA-LN-002-01 | Loran-C | Navigation data | Nancy K. Soderberg |
| Dataset name | Equipment | Description | Dataset contact |
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| Delmarva_depth | Seismic Engineering streamer | Depth to Quaternary regional unconformities offshore of the Delmarva Peninsula, including Maryland and Virginia state waters. This dataset contains six grids: 1) Uqt, the Quaternary-Tertiary composite unconformity; 2) U4, the subaerially and fluvially eroded lower boundary of the Persimmons Point and Ocean City Paleochannels; 3) U6, the subaerially and fluvially eroded lower boundary of the Exmore (Qx) and Belle Haven Paleochannels; 4) U8, the subaerially and fluvially eroded lower boundary of the Eastville Paleochannel and tributaries (Qe);5) U9, the transgressive ravinement surface above Qe and at the base of a Pleistocene highstand system tract (Q2); and 6) U10-U10.5, the composite of subaerially eroded (U10) and tidal ravinement (U10.5) unconformities that are the lower boundaries of the Cape Charles Paleochannel and tributaries and tidal inlet and back-barrier estuarine deposits. | David S Foster |
| Delmarva_thickness | Seismic Engineering streamer | Thickness of Quaternary seismic stratigraphic units offshore of the Delmarva Peninsula, including Maryland and Virginia state waters. This dataset contains five grids: 1) Q, the total Quaternary sediment thickness above the composite unconformity (Uqt); 2) Qbd, a unit interpreted to be the equivalent of the Beaverdam Formation on land that overlies Uqt, or where present, U5 that separates the Persimmons Point and Ocean City Paleochannel fill from Qbd; 3) Q2, a highstand system tract above the U9 ravinement surface and below the composite subaerially and fluvially eroded unconformity (U10), tidal ravinement surface (U10.5), the Holocene transgressive ravinement surface (U11), and the sea floor; 4) Qcch, the fluvial and estuarine fill of the Cape Charles Paleochannel and tributaries, and the tidal inlet and back-barrier estuarine deposits above a tidal ravinement (U10.5)that are truncated by the Holocene transgressive ravinement surface (U11) or the sea floor; and 5) Qmn, include Holocene to modern nearshore marine sediment above the Holocene transgressive ravinement surface (U11). Hereafter, Qcch refers to Qcch and Qbb included in the same unit named Qcch. These data are useful for assessing the geologic framework. | David S Foster |
| USGS_1974-004-FA_1975-003-FA_tracklines | Seismic Engineering streamer | Trackline navigation for EG&G Uniboom seismic-reflection data collected by the U.S. Geological Survey during field activities 1974-004-FA and 1975-003-FA offshore of the Delmarva Peninsula. | David S Foster |
