A2-131-10-007P (core, piston)
0-8 cm (core, piston)
Description | 0-8cm. SS's at 6cm. Very dark gray* siliciclastic clayey silt and sand with traces diatoms, rads, sponge spicules, silicoflagels., forams and coccoliths. Much plagioclase. Also Ferromagnesian minerals, pyrite, Fe oxides, volcanic glass. Bimodal. |
Temporal | |
Lithology | |
Topic |
8-10 cm (core, piston)
Description | 8-10cm. SS at 9cm. Grayish olive green biosiliceous (mostly diatom) clay. Some radiolarian fragments and sponge spicules. Silicoflagellates relatively common. Irregular, distinct lower (color) contact. |
Temporal | |
Lithology | |
Topic |
10-11 cm (core, piston)
Description | 10-11cm. SS at 11cm. Olive gray* biosiliceous (mostly diatom) clay. To 5% rads. Silicoflagellates relatively common. Trace sponge spicules. Similar to overlying unit, but finer grained. Moderately distinct lower contact. May be a large clast. |
Temporal | |
Lithology | |
Topic |
11-75 cm (core, piston)
Description | 11-75cm. SS at 56cm. Very dark gray biosiliceous ooze with varicolored bands, mottles and clasts. Large olive gray* clast at base. Rads and diatoms to 30%; also large silicoflagels. and trace sponge spics. Also minute palgioclase (?) shards and volc. glass. |
Temporal | |
Lithology | |
Topic |
75-104 cm (core, piston)
Description | 75-104cm. SS's at 80 (lens) and 102cm. Dark olive gray*, mottled, slightly silty calc./silic. clay. Includes foram frags., coccoliths, diatoms, rads, silicoflagels., minute plagioclase(?) shards, and ferromag. mins. Black lens at 80cm is mafic volc. glass. |
Temporal | |
Lithology | |
Topic |
104-109 cm (core, piston)
Description | 104-109cm. Removed on board ship. |
Note | Sample exhausted. |
109-180 cm (core, piston)
Description | 109-180cm. SS's 155cm. Olive gray volcanic ash and with traces forams, coccoliths, diatoms, radiolarians, relatively common and large silicoflagellates. Also pyrite, ferromagnesian minerals and plagioclase(?). Transitional lower contact. |
Temporal | |
Lithology | |
Topic |
180-210 cm (core, piston)
Description | 180-210cm. SS at 200cm. Olive gray diatom ooze with rads, sponge spicules and rel. common and large silicoflagellates. Trace coccoliths. Some pyrite, Fe oxides, volcanic glass, ferromag. mins. Indistinct sloped lower contact. |
Temporal | |
Lithology | |
Topic |
210-248 cm (core, piston)
Description | 210-248cm. SS at 224 (coarse-grained pocket) and 245cm. Olive gray* siliceous clay. Silicoflagels. rel. common. Zone of irregular coarse-grained pockets between 223-230cm is mostly mafic volcanic ash and Fe/Mn and/or Fe oxide micronodules. |
Temporal | |
Lithology | |
Topic |
248-265 cm (core, piston)
Description | 248-265cm. Removed on board ship. |
Note | Sample exhausted. |
265-333 cm (core, piston)
Description | 265-333cm. SS's at 270 (mottle) and 272cms. Mottled olive gray* biosilic. (mostly diatom) ooze with rads, sponge spics., silicoflagels. and traces forams and coccoliths. Some pyrite and Fe oxides. Some black (ash?) blebs. Mottle similar to matrix. |
Temporal | |
Lithology | |
Topic |
333-372 cm (core, piston)
Description | 333-372cm. SS's at 357cm. Grayish olive to very dark gray biosiliceous clay with minute volc. glass shards. Silicoflagellates present. Also pyrite, often in diatom tests, and Fe oxides and ferromagnesian minerals. Distinct convex lower contact. |
Temporal | |
Lithology | |
Topic |
372-376 cm (core, piston)
Description | 372-376cm. SS at 375cm. Very dark gray arcuate band of micronodules (pyrite or Fe oxide) with volcanic glass. Also some diatoms, rads, sponge spicules, silicoflagels., foram frags., and coccoliths. Ferromagnesian minerals relatively common. |
Temporal | |
Lithology | |
Topic |
376-412 cm (core, piston)
Description | 376-412cm. SS at 400cm. Olive gray* diatom clay with radiolarians and traces sponge spicules, silicoflagellates, forams (small, coiled planktonics and small test fragments). Scant trace coccoliths. Pyrite present. |
Temporal | |
Lithology | |
Topic |
412-417 cm (core, piston)
Description | 412-417cm. Removed on board ship. |
Note | Sample exhausted. |
417-564 cm (core, piston)
Description | 417-564cm. SS's at 430 and 490 (clast) and 535cm. Grayish olive siliciclastic/biosiliceous clay. Some large silicoflagels. More calcareous at base. Pyrite to 3% at top. Numerous varicolored indistinct clasts. Clast at 490cm is biosiliceous ooze. |
Temporal | |
Lithology | |
Topic |
564-567 cm (core, piston)
Description | 564-567cm. SS at 565cm. Very fine-grained, olive gray diatom clay with rads, and silicoflagellates. Scant traces of forams and coccoliths. Also minute volcanic glass and plagioclase(?) shards. Pyrite to 5%. Irregular upper contact. May be a large clast. |
Temporal | |
Lithology | |
Topic |
567-572 cm (core, piston)
Description | 567-572cm. Removed on board ship. |
Note | Sample exhausted. |
572-640 cm (core, piston)
Description | 572-640cm. SS at 620 cm.Soft, cohesive, very dark gray and olive gray fine grained clay with diatoms and radiolarians and traces forams and coccoliths. Pyrite present in diatom tests. Indistinct mottles (clasts?). Transitional lower boundary. |
Temporal | |
Lithology | |
Topic |
640-708 cm (core, piston)
Description | 640-708cm. SS's at 670 and 705 (black lens )cm. Dark olive gray* biosiliceous clay. Includes silicoflagellates. Also ferromag. mins., pyrite, Fe oxides, and siliciclasticss. Very dark gray lens at 705cm is aggregated pyrite grains (95%). |
Temporal | |
Lithology | |
Topic |
708-725 cm (core, piston)
Description | 708-725cm. Removed on board ship. |
Note | Sample exhausted. |
725-775 cm (core, piston)
Description | 725-775cm. SS's at 745, and 769 (clast) cm. Olive gray to very dark gray fine-grained biosilic. (mostly diatom) clay. Contains large silicoflagels, sponge spicules, and trace forams. Pyrite present. Clast is similar but contains fewer diatoms and rads. |
Temporal | |
Lithology | |
Topic |
775-790 cm (core, piston)
Description | 775-790cm. SS at 783cm. Olive gray* biosiliceous clay in coarser grained arcuate zone. Silicoflagellates, ferromagnesian minerals and pyrite present. Some dirty (with many inclusions) volcanic glass shards. |
Temporal | |
Lithology | |
Topic |
790-871 cm (core, piston)
Description | 790-871cm. SS at 850cm. Olive gray* biosiliceous clay. Indistinct darker mottles. Scant traces of foraminifers and coccoliths. Some silicoflagellates. Pyrite in diatom tests. Indistinct darker mottles. |
Temporal | |
Lithology | |
Topic |
- Collection
- Date Collected
- 1994-02-13
- Originator
- Vessel
- Physical Description
-
Core length 871cm, diameter 6cm
- Material Details
-
4365 meters
refrigerated
- Cruise
- Genre
- Cartographics
Point: 9.6397,-86.1825
Format
View formats within this collection
- Language
- English
- Identifier
-
Sample Number: A2-131-10-007P
- License
-
Creative Commons Attribution 4.0 International Public License
- Rights Holder
- UC Regents
- Copyright
-
Under copyright (US)
Use: This work is available from the UC San Diego Library. This digital copy of the work is intended to support research, teaching, and private study.
Constraint(s) on Use: This work is protected by the U.S. Copyright Law (Title 17, U.S.C.). Use of this work beyond that allowed by "fair use" or any license applied to this work requires written permission of the copyright holder(s). Responsibility for obtaining permissions and any use and distribution of this work rests exclusively with the user and not the UC San Diego Library. Inquiries can be made to the UC San Diego Library program having custody of the work.
- Digital Object Made Available By
-
Research Data Curation Program, UC San Diego, La Jolla, 92093-0175 (https://lib.ucsd.edu/rdcp)
- Last Modified
2020-10-26