Expedition 357 Scientists (2017): Description of lithologic section units of IODP Hole 357-M0075A [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.872039
Always quote citation above when using data! You can download the citation in several formats below.
Related to:
Frueh-Green, Gretchen L; Orcutt, Beth N; Green, Sophie; Cotterill, Carol; Expedition 357 Scientists (2016): Atlantis Massif Serpentinization and Life. International Ocean Discovery Program Preliminary Report, International Ocean Discovery Program, https://doi.org/10.14379/iodp.pr.357.2016
Further details:
Project(s):
Coverage:
Latitude: 30.127820 * Longitude: -42.066350
Date/Time Start: 2015-11-28T00:00:00 * Date/Time End: 2015-11-28T00:00:00
Minimum DEPTH, sediment/rock: 0.010 m * Maximum DEPTH, sediment/rock: 0.520 m
Event(s):
357-M0075A (AM-03A) * Latitude: 30.127820 * Longitude: -42.066350 * Date/Time: 2015-11-28T00:00:00 * Elevation: -1568.0 m * IGSN: IBCR0357EHQ0001 * Location: Atlantis Massif * Campaign: Exp357 * Basis: James Cook * Comment: CTD: 30 07.662N / 42 03.906W (14-Nov-2015), RD2
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample code/label | Sample label | Expedition 357 Scientists | DSDP/ODP/IODP sample designation | ||
| 2 | Lithologic unit/sequence | Unit | Expedition 357 Scientists | Visual description | ||
| 3 | DEPTH, sediment/rock | Depth sed | m | Expedition 357 Scientists | Geocode | |
| 4 | Rock type | Rock | Expedition 357 Scientists | Visual description | ||
| 5 | Main Lithology | Main lith | Expedition 357 Scientists | Visual description | ||
| 6 | Lithology/composition/facies | Lithology | Expedition 357 Scientists | Visual description | ||
| 7 | Lithology/composition/facies | Lithology | Expedition 357 Scientists | Visual description | Continuation 1 | |
| 8 | Lithology/composition/facies | Lithology | Expedition 357 Scientists | Visual description | Continuation 2 | |
| 9 | Percentage | Perc | % | Expedition 357 Scientists | Visual description | Main lithology |
| 10 | Comment | Comment | Expedition 357 Scientists | Visual description | ||
| 11 | Color code HLS-system | Color HLS | Expedition 357 Scientists | Munsell Color System (1994) | ||
| 12 | Structure | Structure | Expedition 357 Scientists | Visual description | Fracture and foliation | |
| 13 | Structure | Structure | Expedition 357 Scientists | Visual description | Veins | |
| 14 | Structure | Structure | Expedition 357 Scientists | Visual description | Fracture morphology | |
| 15 | Minerals | Minerals | Expedition 357 Scientists | Visual description | ||
| 16 | Alteration | Alteration | Expedition 357 Scientists | Visual description |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
36 data points
Data
| 1 Sample label (DSDP/ODP/IODP sample designation) | 2 Unit (Visual description) | 3 Depth sed [m] | 4 Rock (Visual description) | 5 Main lith (Visual description) | 6 Lithology (Visual description) | 7 Lithology (Continuation 1, Visual descri...) | 8 Lithology (Continuation 2, Visual descri...) | 9 Perc [%] (Main lithology, Visual descri...) | 10 Comment (Visual description) | 11 Color HLS (Munsell Color System (1994)) | 12 Structure (Fracture and foliation, Visua...) | 13 Structure (Veins, Visual description) | 14 Structure (Fracture morphology, Visual d...) | 15 Minerals (Visual description) | 16 Alteration (Visual description) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 357-M0075A-1R-1,1 | 1 | 0.010 | Sediment | Basaltic breccia, carbonate matrix | Foraminiferous sedimentary breccia, matrix-supported breccia with clasts > 2cm in size. The matrix is mostly carbonate with foraminiferas and burrows. The clasts include angular basalts (up to 5cm) and foliated talc-rich rocks (talc fels) with | uncertain protoliths (serpentinite or gabbro). | 100 | Structures: Open fractures=1 -- <1 per 10cm; Veins=0 -- No veins; Foliation=0 -- Massive; Foliation=2 -- Moderately foliated; Cataclastic deformation=1 -- Minor fracturing | Veins: Shape=0 -- No veins | Fractures: Morphology=Irregular | Minerals: Amphibole; Carbonate; Other; Oxides; Serpentine; Talc; Tremolite | ||||
| 357-M0075A-1R-1,19 | 2 | 0.190 | Sediment | Polymict breccia | Matrix-supported breccia with clasts of variable size, ranging from isotropic angular to sheared texture (sometimes with sigmoidal shape). The clasts consist of talc, minor serpentine and clay (confirmed by XRD).They can be classified as talc-rich | fels/schist. Brittle deformation of clasts: small fractures are crosscutting the foliation of the rocks and fill in the basalt clasts. Thin section at depth 25-27cm is a talc-overprinted ultramafic rock, although the shape of pseudomorphed | pyroxenes suggests an impregnation texture not a porphyoclastic one. The clast contains a schistose interval. Semi-quant XRD: 25-27cm - tlc (79), clay (11), liz (9), ox (1) | 100 | Structures: Open fractures=1 -- <1 per 10cm; Foliation=0 -- Massive; Foliation=2 -- Moderately foliated | Fractures: Morphology=Irregular | Minerals: Clay minerals; Other; Serpentine; Talc | ||||
| 357-M0075A-1R-2,0 | 1 | 0.520 | Metamorphic/Fault Rock | Talc-chlorite schist | Green dark foliated fine-grained talc-chlorite schist (with minor clay, serpentine, olivine determined by XRD). Serpentine veins with carbonate in the core. Thin section is a talc rock with schistose intervals, cut by small faults with pull-apart areas | occupied by chlorite. There are also actinolite-rich clasts with pseudomorphed phenocrysts that appear to be metadolerite. Semi-quant XRD: name in XRD figures/tables is 1RCC - 0-5cm - chl (57), tlc (25), chrys (5), ol (6), ox (5), sp (3) | 100 | Protolith to be defined after TS | 10GY 2.5/1 | Structures: Open fractures=0 -- No open fractures; Veins=5 -- >20 per 10cm; Foliation=2 -- Moderately foliated | Veins: Shape=3 --Irregular; Connectivity=4 -- Network; Texture=1 -- Massive; Structure=1 -- Uniform; Structure=3 -- Composite | Fractures: Morphology=No open fractures | Minerals: Chlorite; Clay minerals; Other; Serpentine; Olivine | Very high alteration |