Material: | Rock |
Rock Classification: | VOL |
Rock Type: | Tuff |
Rock Description (1):
| 240.645-241.045m- Interval:
240.645-241.045m
- Major Lithology:
Tuff
- Comments:
NN
- Volcaniclastic Debris:
Well lithified; Color:Dark Green; Stratification:nn; Granulometric:Medium lapilli tuff with outsized coarse lapilli, bomb; Secondary Minerals:Y; orange coat on bomb, within clast vesicles, irregular matrix voids, and intergranular space.; Sorting:Poorly sorted; Support:Matrix supported; Grading:Massive; Alteration:Highly altered; Fractures:@38 cm 60C degrees infilled fracture; Clast Types:lapilli (simple/ zoned), composites; Matrix:Coarse to medium ash and rare crystal fragments with intergranular altered very fine-fines and secondary minerals; Lithic:0; Comments:Secondary mineral abundance in matrix varies with fines content, being more prevalent with decreasing fines.
|
Rock Description (2):
| 241.045-241.945m- Interval:
241.045-241.945m
- Major Lithology:
Tuff
- Comments:
NN
- Volcaniclastic Debris:
Well lithified; Color:white-orange; Stratification:nn; Granulometric:Efflorescence (or whiteish-mineral crust) grown on Medium to coarse lapilli tuff; Secondary Minerals:Y; as euhedral crystals, mineral crust, infilling all intergranular space; Sorting:Poorly sorted; Support:nn; Grading:nn; Fractures:nn; Clast Types:lapilli (simple/ zoned), lithics?; Matrix:nn; Lithic:0; Comments:Primary features were obscured by thick euhedral secondary mineral crust. The assessment of the clast population and matrix material was hindered y the mineral crust, Sulfur smell
|
Rock Description (3):
| 241.545-242.515m- Interval:
241.545-242.515m
- Major Lithology:
Tuff
- Comments:
NN
- Volcaniclastic Debris:
Well lithified; Color:Dark Green; Stratification:nn; Granulometric:Medium lapilli tuff with outsized coarse lapilli, bomb; Secondary Minerals:Y; orange coat on bomb, within clast vesicles, irregular matrix voids, and intergranular space.; Sorting:Poorly sorted; Support:Matrix supported; Grading:Massive; Alteration:Highly altered; Fractures:nn; Clast Types:lapilli (simple/ zoned), composites; Matrix:Coarse to medium ash and rare crystal fragments with intergranular altered very fine-fines and secondary minerals; Lithic:0; Comments:Secondary mineral abundance in matrix varies with fines content, being more prevalent with decreasing fines.
|
From Corrected Depth: | 240.65 |
To Corrected Depth: | 241.62 |
Depth Reference: | meter below ground level |
Geological Age: | quaternary-holocene |
Geological Unit: | N/A |