10-20kg of lava. One very large rock. Collected from a forearc rift, SE Mariana forearc rift, volcanic ridge.
| 1 :
|Lithology/Mineralogy: ||sediments (unconsolidated), sand, calcareous (forams/pteropods) |
|Comments: ||Sample TN273-22D-01-01. Altered vesicular lava, vesicles 1-2 mm, approximately 2-3% by volume; dark mineral (saponite?) approximately 1 mm in diameter and approximately 5% by volume present; 3 mm glassy margin|
| 2 :
|Lithology/Mineralogy: ||sedimentary (chemical), Mn/Fe oxide crusts and nodules |
|Glass/remarks:||notable Mn/Fe oxide coatings|
|Comments: ||Sample TN273-22D-02-01. Rift bottom. very fine grained, medium to light brown sediment|