Table T5.
Petrographic features of sediments from Woodlark Basin northern margin Site 1118.
Age
Core, section, interval (cm)
Depth (mbsf)
Lithology
Matrix/Cement
Lithic fragments
Bioclasts
Organic carbon
180-1118A-
late Pliocene to Pleistocene
7R-1, 43-46
262.93
Fine-grained sandstone
13R-2, 31-33.5
322.11
Fine-grained sandstone
15R-5, 141-142
345.85
Fine-grained sandstone
20R-5, 15-18
393.20
Sandy siltstone
Planktonic foraminifers, mollusks
middle Pliocene
22R-5, 94-98
412.87
Siltstone
24R-5, 105-107
432.23
Fine-grained sandstone/siltstone
Planktonic and benthic foraminifers
33R-2, 66-70
514.03
Fine-grained sandstone
34R-3, 61-63
525.12
Fine-grained sandstone
Argillaceous
Shell debris
X
35R-1, 140-143
532.80
Fine-grained sandstone
Argillaceous
Foraminifers
36R-3, 8-10
543.72
Fine-grained sandstone
Argillaceous
Foraminifers
37R-3, 95-97
554.43
Siltstone
Andesites
38R-3, 128-130
564.40
Clayey siltstone
39R-3, 100-103
573.75
Siltstone
41R-3, 130-132
593.22
Laminated fine-grained sandstone and siltstone
Planktonic foraminifers, mollusks
42R-3, 112-114
602.43
Siltstone/sandstone
Andesites
Benthic and planktonic foraminifers
43R-7, 63-64
616.90
Fine-grained sandstone
Carbonatic matrix
Shell debris
44R-4, 129-130
623.45
Silty sandstone
Glassy
Shards
Shell debris
45R-4, 105-107
632.49
Silty sandstone
Argillaceous
Benthic and planktonic foraminifers, mollusks
46R-4, 99-101
642.54
Silty sandstone
Argillaceous/carbonatic
mollusks, planktonic foraminifers
47R-6, 128-130
654.94
Silty sandstone
Argillaceous/carbonatic
mollusks, planktonic foraminifers
53R-2, 60-63
706.70
Silty sandstone
56R-1, 44-47
734.24
Silty sandstone
Glassy
Shards
57R-2, 52-55
745.34
Silty sandstone
57R-4, 20-21
747.84
Fine- to medium-grained sandstone
Glassy
Shards
Benthic foraminifers, mollusks
58R-3, 38-40
756.05
Silty sandstone
Glassy
Shards
Foraminifers
58R-4, 52-56
757.33
Silty sandstone
58R-5, 18-20
758.49
Fine-grained sandstone
59R-2, 133-135
765.32
Fine-grained sandstone
Glassy
Shards
60R-1, 93-95
773.24
Siltstone
Volcanics
Foraminifers
X
64R-1, 49-51
811.19
Laminated fine-grained sandstone and siltstone
Argillaceous
Foraminifers
X
64R-1, 127-128
811.97
Fine- to medium-grained sandstone
Argillaceous
Andesites
Planktonic foraminifers
65R-4, 24-26
824.62
Fine-grained sandstone
66R-3, 31-34
833.05
Laminated fine-grained sandstone and siltstone
Andesites
Benthic foraminifers
66R-5, 17-21
835.77
Laminated fine-grained sandstone and siltstone
Andesites
Benthic and planktonic foraminifers
67R-4, 73-74
844.62
Medium-grained sandstone
Benthic foraminifers
early Pliocene
68R-2, 117-120
851.92
Medium-grained sandstone
Benthic foraminifers, mollusks
68R-3, 24-28
852.30
Medium-grained sandstone
Argillaceous/carbonatic
Andesites
Foraminifers
X
68R-3, 36-39
852.42
Coarse-grained sandstone
Glassy/carbonatic/sparry
Shards, andesites
Shell debris
68R-3, 102-105
853.08
Medium-grained sandstone
Glassy
Shards, andesites
Benthic foraminifers
68R-4, 31-33
853.87
Packstone
Argillaceous
mollusks, benthic foraminifers, echinoids, red algae
?
69R-2, 68-72
861.18
Grainstone
Sparry
Dolerites, chlorite schists
Red algae
69R-3, 58-61
862.55
Grainstone
Algae, foraminifers, mollusks, bryozoans
X, inside tests
70R-1, 0-1
868.70
Grainstone
Volcanics, basalts
Shell debris, algae, mollusks
70R-1, 72-74
869.42
70R-3, 129-130
872.54
Fine-grained sandstone
Basalts
71R-1, 13-15
878.53
Conglomerate
Volcanics, basalts, dolerites, gabbros
71R-1, 29-31
878.69
Conglomerate
Basalts, gabbros
Notes: Lithic fragments: gabbro includes olivine gabbro, oxide gabbro, and diorite compositions; basalt and dolerite refer to tholeiitic serial affinity; andesite includes calc-alkaline basalt andesite and andesite to quartz andesite; felsite refers to dacite and rhyolite compositions; trachyte includes lava clasts and glass with K-feldspar microliths; granophyre indicates fine-grained eutectic quartz-feldspar intergrowth; shards include ash fall tephra or prevalent glassy matrix in turbidites; volcanics include fragments of uncertain definition. X = present.