Publication Date:
2023-08-28
Description:
The Oaxaca transect, located off southern Mexico and drilled during Leg 66, sampled a truncated margin and subduction complex. In contrast, the Guatemala transect was selected because accretion was thought to have continued in this area during most of the Tertiary. Site surveys conducted by the University of Texas Marine Science Institute provided multichannel seismic records, among which profile GUA-13 was chosen as the location for Leg 67 drill holes. Selection of this transect arises in part from the fact that it includes a portion of the San José Canyon, thus layers of hemipelagic drape may have been stripped away by erosion, allowing quicker access to deep horizons. By studying the continental margin off Guatemala it was hoped to strengthen the tie between offshore and onshore geology, to describe the stratigraphic sequence from the continental slope to the subducting oceanic plate beneath, to recover in ash layers a record of Central American volcanism.
Keywords:
67-495; 67-496; 67-497; 67-499; 67-499B; 67-499C; 67-500; Comment; Deep Sea Drilling Project; Deposit type; DEPTH, sediment/rock; Description; DRILL; Drilling/drill rig; DSDP; Event label; Glomar Challenger; Identification; Leg67; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; North Pacific/SLOPE; North Pacific/TRENCH; Position; Quantity of deposit; Sample code/label; Sediment type; Substrate type; Visual description
Type:
Dataset
Format:
text/tab-separated-values, 116 data points
