| TABLE 8. Phytolith and other siliceous microfossil data for core SB1c, St. Bernard Parish, Louisiana. | ||||||||||
| St. Bernard core SB1c (location: 29o58"53' N, 89o55"27' W; sampled: 03/20/1996). | ||||||||||
| Percent compaction (applied linearly): 29.1. | ||||||||||
|
Microfossil type |
Number counted (14-cm depth)1 |
Per- cent |
Number counted (28-cm depth)1 |
Per- cent |
Number counted (42-cm depth)1 |
Per- cent |
Number counted (56-cm depth)1 |
Per- cent |
Number counted (71-cm depth)1 |
Per- cent |
| Biserial spinose rods | 8 | 4 | 10 | 5 | 9 | 4 | 35 | 16 | 55 | 25 |
|
Diatoms - centric (nonterrestrial component) |
26 | 12 | 3 | 1 | 24 | 12 | 2 | 1 | 02 | 0 |
|
Diatoms - pennate (nonterrestrial component) |
44 | 21 | 55 | 27 | 62 | 31 | 13 | 6 | 0 | 0 |
| Circle | 31 | 15 | 34 | 17 | 18 | 9 | 6 | 3 | 5 | 2 |
| Cross | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
| Cyperaceae - type 1 | 2 | 1 | 1 | 0 | 8 | 4 | 8 | 4 | 0 | 0 |
| Cyperaceae - type 2 | 0 | 0 | 2 | 1 | 0 | 0 | 4 | 2 | 61 | 28 |
| Cyst | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
| Dumbbell | 3 | 1 | 6 | 3 | 3 | 1 | 5 | 2 | 2 | 1 |
| Hair | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 |
| Intertinite (charcoal) | 20 | 9 | 10 | 5 | 1 | 0 | 17 | 8 | 4 | 2 |
| Irregular forms | 52 | 25 | 51 | 25 | 47 | 23 | 69 | 31 | 52 | 24 |
| Non-spinose rods | 10 | 5 | 9 | 4 | 11 | 5 | 26 | 12 | 19 | 9 |
| Saddle | 6 | 3 | 18 | 9 | 13 | 6 | 13 | 6 | 10 | 5 |
| Silicoflagellate (Distephanus) | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Sphere | 2 | 1 | 0 | 0 | 1 | 0 | 3 | 1 | 0 | 0 |
|
Sponge spicule (nonterrestrial component) |
2 | 1 | 2 | 1 | 3 | 1 | 5 | 2 | 6 | 3 |
| Uniserial spinose rods | 3 | 1 | 1 | 0 | 0 | 0 | 3 | 1 | 2 | 1 |
| Wagon wheel | 2 | 1 | 0 | 0 | 0 | 0 | 15 | 7 | 0 | 0 |
| Total count | 212 | 100 | 202 | 100 | 201 | 100 | 224 | 100 | 219 | 100 |
| 1Compaction-corrected depth at sample midpoint. | ||||||||||
| 2Rare, broken fragments. | ||||||||||
| Source: U.S. Geological Survey Open-File Report 98-36. Carbon storage and late Holocene chronostratigraphy of a Mississippi River deltaic marsh, St. Bernard Parish, Louisiana (H.W. Markewich, ed.). | ||||||||||