28J: Blue Springs Landing Core,
Screven County
By
Paul Huddlestun
Originally Logged - 1973
Redrawn and written up – 5/09
Reviewed & Transcribed 02/2024
Screven County
By
Paul Huddlestun
Originally Logged - 1973
Redrawn and written up – 5/09
Reviewed & Transcribed 02/2024
Blue Springs Landing 7½’ Quadrangle
TYPE SECTION, TIGER LEAP MEMBER, PARACHUCLA FORMATION
The location of the core site is in southeastern and eastern-most Screven County, adjacent to the Savannah River, Blue Springs and Blue Springs Landing, and in the picnic area of Blue Springs, immediately northwest of Tiger Leap Bluff; approximately 1.6 miles east of the intersection of Newington Hwy (GA 24) and Blue Springs Road.
Latitude N 32° 37.997’
Longitude W 81° 25.398’
Elev. ~52 Feet
TYPE SECTION, TIGER LEAP MEMBER, PARACHUCLA FORMATION
The location of the core site is in southeastern and eastern-most Screven County, adjacent to the Savannah River, Blue Springs and Blue Springs Landing, and in the picnic area of Blue Springs, immediately northwest of Tiger Leap Bluff; approximately 1.6 miles east of the intersection of Newington Hwy (GA 24) and Blue Springs Road.
Latitude N 32° 37.997’
Longitude W 81° 25.398’
Elev. ~52 Feet
Lithostratigraphic unit and bed number Thickness Depth
SOIL
Bed 1 Sand: structureless; deeply weathered: 3.0 0.0
UPPER PLIOCENE; PIACENZIAN
CYPRESSHEAD FORMATION? – 19 feet
Bed 2 Sand: fine quartz gravel, poorly sorted, loose; 2.0 3.0
massive bedded and structureless; weathered;
gradationally overlies:
Bed 3 Sand: slightly argillaceous; poorly sorted; 1.0 5.0
massive and structureless; slightly indurated
but soft and competent; (100% core recovery);
weathered; gradationally overlies:
Bed 4 Sand: very slightly argillaceous, clay content 2.5 6.0
increases downward; coarse grained with fine
quartz gravel; poorly sorted; rather loose and
incompetent; weathered:
Bed 5 Sand: clayey, micaceous; poorly sorted; 1.5 8.5 massive, structureless; weathered; grades
downward into:
Bed 6 Sand: with fine quartz gravel, very slightly 7.0 10.0
micaceous; massive bedded and
structureless; loose and incompetent, overlies
core gap:
NO CORE
Bed 1 Sand: structureless; deeply weathered: 3.0 0.0
UPPER PLIOCENE; PIACENZIAN
CYPRESSHEAD FORMATION? – 19 feet
Bed 2 Sand: fine quartz gravel, poorly sorted, loose; 2.0 3.0
massive bedded and structureless; weathered;
gradationally overlies:
Bed 3 Sand: slightly argillaceous; poorly sorted; 1.0 5.0
massive and structureless; slightly indurated
but soft and competent; (100% core recovery);
weathered; gradationally overlies:
Bed 4 Sand: very slightly argillaceous, clay content 2.5 6.0
increases downward; coarse grained with fine
quartz gravel; poorly sorted; rather loose and
incompetent; weathered:
Bed 5 Sand: clayey, micaceous; poorly sorted; 1.5 8.5 massive, structureless; weathered; grades
downward into:
Bed 6 Sand: with fine quartz gravel, very slightly 7.0 10.0
micaceous; massive bedded and
structureless; loose and incompetent, overlies
core gap:
NO CORE
LOWER MIOCENE; AQUITANIAN
PARACHUCLA FORMATION
Tiger Leap Member - ~38 feet
Penny Farms, Tampa, Chattahoochee, St. Marks - equivalents
Bed 7 Sand: very slightly argillaceous, micaceous; 5.0 22.0
poorly sorted; coarse grained;
massive bedded and structureless;
nonindurated but competent; top 1 inch of
bed is weathered; overlies core gap:
NO CORE 5.0 27.0
Bed 8 Sand: medium grained; silty, micaceous, 5.0 32.0
slightly phosphatic, very slightly
argillaceous, slightly calcareous
at base; moderately sorted; slightly
competent; grades downward into:
Bed 9 Sand: slightly “marly”, argillaceous, 1.5 37.0
micaceous, slightly calcareous, some chalky
shell impressions; structureless; competent
(100% core recovery); the following planktonic
foraminifera were identified from a sample at ~38 feet:
Globorotalia kugleri
Globorotalia mayeri s.l.
Globorotalia cf. mayeri
Globigerina angulisuturalis
Globigerina cf. ciperoensis
Globigerina angustiumbilicata
Globigerina praebulloides
Globigerina cf. quinqueloba
Globigerinella obesa
Globigerinella pseudobesa
Globigerinoides primordius - trace
cf. Globigerinoides primordius
Globoquadrina galavisi
Globorotaloides venezuelana var. larmeui
Globoquadrina/Globorotaloides/ Catapsydrax spp. (juveniles)
Globigerinita glutinata
Globigerinita uvula
Globigerinita var. A
Cassigerinella chipolensis
grades downward into:
Bed 10 Clay: “marl”, silty, calcareous, slightly 8.5 38.5
micaceous; microfossiliferous; basal 1 foot
contains shells and black phosphate pebbles;
massive bedded and structureless;
unconsolidated but competent (100% core
recovery); the following planktonic
foraminifera were identified from a sample
at ~42 feet:
Globorotalia kugleri
Globorotalia mayeri s.l.
Globorotalia cf. mayeri
Globigerina cf. quinqueloba
Globigerina praebulloides
Globigerinella cf. pseudobesa
cf. Globigerinoides primordius
Globoquadrina/Globorotaloides/Catapsydrax spp. (juveniles)
Globigerinita glutinata
Globigerinita var. A
Cassigerinella chipolensis;
The following planktonic foraminifera were identified
from a sample at ~45 feet:
Globorotalia kugleri
Globorotalia mayeri s.l.
Globorotalia cf. mayeri
Globorotalia opima s.l.
Globigerina ciperoensis
Globigerina cf. quinqueloba
Globigerina praebulloides
Globigerinella obesa
Globigerinella pseudobesa
Globigerinella cf. pseudociperoensis
Globigerinoides primordius - trace
cf. Globigerinoides primordius
Globoquadrina dehiscens
Globoquadrina galavisi
Globoquadrina/Globorotaloides/
Catapsydrax spp. (juveniles)
Globorotaloides cf. venezuelana var.
larmeui
Globigerinita glutinata
Globigerinita var. A
Cassigerinella chipolensis
abruptly overlies:
Bed 11 Sand: “marly”, somewhat argillaceous, 12.0 47.0
calcareous, micaceous, some scattered
chalky shell fragments; quartz sand is
medium grained; massive and structureless;
sediment is unconsolidated but competent;
the following planktonic foraminifera were
identified from a sample at ~47 feet:
Globorotalia kugleri
Globorotalia mayeri s.l.
Globigerina angulisuturalis
Globigerina ciperoensis
Globigerina praebulloides
Globigerinoides primordius
Globoquadrina galavisi
Globigerinita glutinata
Cassigerinella chipolensis;
grades downward into:
Bed 12 Sandstone: “marly”, probably slightly 1.0 59.0
argillaceous; fossiliferous; indurated;
disconformably overlies:
PARACHUCLA FORMATION
Tiger Leap Member - ~38 feet
Penny Farms, Tampa, Chattahoochee, St. Marks - equivalents
Bed 7 Sand: very slightly argillaceous, micaceous; 5.0 22.0
poorly sorted; coarse grained;
massive bedded and structureless;
nonindurated but competent; top 1 inch of
bed is weathered; overlies core gap:
NO CORE 5.0 27.0
Bed 8 Sand: medium grained; silty, micaceous, 5.0 32.0
slightly phosphatic, very slightly
argillaceous, slightly calcareous
at base; moderately sorted; slightly
competent; grades downward into:
Bed 9 Sand: slightly “marly”, argillaceous, 1.5 37.0
micaceous, slightly calcareous, some chalky
shell impressions; structureless; competent
(100% core recovery); the following planktonic
foraminifera were identified from a sample at ~38 feet:
Globorotalia kugleri
Globorotalia mayeri s.l.
Globorotalia cf. mayeri
Globigerina angulisuturalis
Globigerina cf. ciperoensis
Globigerina angustiumbilicata
Globigerina praebulloides
Globigerina cf. quinqueloba
Globigerinella obesa
Globigerinella pseudobesa
Globigerinoides primordius - trace
cf. Globigerinoides primordius
Globoquadrina galavisi
Globorotaloides venezuelana var. larmeui
Globoquadrina/Globorotaloides/ Catapsydrax spp. (juveniles)
Globigerinita glutinata
Globigerinita uvula
Globigerinita var. A
Cassigerinella chipolensis
grades downward into:
Bed 10 Clay: “marl”, silty, calcareous, slightly 8.5 38.5
micaceous; microfossiliferous; basal 1 foot
contains shells and black phosphate pebbles;
massive bedded and structureless;
unconsolidated but competent (100% core
recovery); the following planktonic
foraminifera were identified from a sample
at ~42 feet:
Globorotalia kugleri
Globorotalia mayeri s.l.
Globorotalia cf. mayeri
Globigerina cf. quinqueloba
Globigerina praebulloides
Globigerinella cf. pseudobesa
cf. Globigerinoides primordius
Globoquadrina/Globorotaloides/Catapsydrax spp. (juveniles)
Globigerinita glutinata
Globigerinita var. A
Cassigerinella chipolensis;
The following planktonic foraminifera were identified
from a sample at ~45 feet:
Globorotalia kugleri
Globorotalia mayeri s.l.
Globorotalia cf. mayeri
Globorotalia opima s.l.
Globigerina ciperoensis
Globigerina cf. quinqueloba
Globigerina praebulloides
Globigerinella obesa
Globigerinella pseudobesa
Globigerinella cf. pseudociperoensis
Globigerinoides primordius - trace
cf. Globigerinoides primordius
Globoquadrina dehiscens
Globoquadrina galavisi
Globoquadrina/Globorotaloides/
Catapsydrax spp. (juveniles)
Globorotaloides cf. venezuelana var.
larmeui
Globigerinita glutinata
Globigerinita var. A
Cassigerinella chipolensis
abruptly overlies:
Bed 11 Sand: “marly”, somewhat argillaceous, 12.0 47.0
calcareous, micaceous, some scattered
chalky shell fragments; quartz sand is
medium grained; massive and structureless;
sediment is unconsolidated but competent;
the following planktonic foraminifera were
identified from a sample at ~47 feet:
Globorotalia kugleri
Globorotalia mayeri s.l.
Globigerina angulisuturalis
Globigerina ciperoensis
Globigerina praebulloides
Globigerinoides primordius
Globoquadrina galavisi
Globigerinita glutinata
Cassigerinella chipolensis;
grades downward into:
Bed 12 Sandstone: “marly”, probably slightly 1.0 59.0
argillaceous; fossiliferous; indurated;
disconformably overlies:
LOWER OLIGOCENE; VICKSBURGIAN
SUWANNEE LIMESTONE – 47 feet
Bed 13 Limestone: slightly sandy but less sandy 2.0 60.0
Down-section, macrofossiliferous; medium
to coarse textured in upper part, medium
textured and softer in lower part
(much of the underlying unrecovered core
is probably related to underlying,
unconsolidated limestone lithology);
somewhat indurated; overlies core gap:
NO CORE 13.0 62.0
Bed 14 Limestone: “marly”, slightly argillaceous, 5.0 75.0
very microfossiliferous (trace of quartz sand
in the lower part); calcareous particles are
fine to medium grained and even textured;
very crudely layered; unconsolidated but
tough; grades downward into:
Bed 15 Limestone: very slightly and finely sandy, 27.0 80.0
coarsely calcarenitic; poorly sorted, arenitic,
bioclastic particles, and fragments;
unconsolidated; microfossiliferous,
Dictyoconus at ~90 feet; disconformably
overlies:
UPPER EOCENE; UPPER JACKSONIAN
OCALA GROUP
UNNAMED BRYOZOAN-RICH LIMESTONE – 16 feet+
Crystal River, Shubuta-equivalents
Bed 16 Limestone: chalky, macrofossiliferous, 7.0 107.0
bimodal – small bryozoans and other fossil
fragments floating in a matrix of chalky
(micritic), fine calcarenite to calcilutite;
massive bedded and structureless;
somewhat consolidated; white; grades
downward into:
Bed 17 Limestone: almost a bryozoan coquina; 9.0+ 114.0
massive and structureless; moderately
indurated; bottom of the core at 123 feet.
___________________________ TOTAL DEPTH – 123 FEET
SUWANNEE LIMESTONE – 47 feet
Bed 13 Limestone: slightly sandy but less sandy 2.0 60.0
Down-section, macrofossiliferous; medium
to coarse textured in upper part, medium
textured and softer in lower part
(much of the underlying unrecovered core
is probably related to underlying,
unconsolidated limestone lithology);
somewhat indurated; overlies core gap:
NO CORE 13.0 62.0
Bed 14 Limestone: “marly”, slightly argillaceous, 5.0 75.0
very microfossiliferous (trace of quartz sand
in the lower part); calcareous particles are
fine to medium grained and even textured;
very crudely layered; unconsolidated but
tough; grades downward into:
Bed 15 Limestone: very slightly and finely sandy, 27.0 80.0
coarsely calcarenitic; poorly sorted, arenitic,
bioclastic particles, and fragments;
unconsolidated; microfossiliferous,
Dictyoconus at ~90 feet; disconformably
overlies:
UPPER EOCENE; UPPER JACKSONIAN
OCALA GROUP
UNNAMED BRYOZOAN-RICH LIMESTONE – 16 feet+
Crystal River, Shubuta-equivalents
Bed 16 Limestone: chalky, macrofossiliferous, 7.0 107.0
bimodal – small bryozoans and other fossil
fragments floating in a matrix of chalky
(micritic), fine calcarenite to calcilutite;
massive bedded and structureless;
somewhat consolidated; white; grades
downward into:
Bed 17 Limestone: almost a bryozoan coquina; 9.0+ 114.0
massive and structureless; moderately
indurated; bottom of the core at 123 feet.
___________________________ TOTAL DEPTH – 123 FEET