Applied Sciences,
Journal Year:
2025,
Volume and Issue:
15(3), P. 1310 - 1310
Published: Jan. 27, 2025
Organic
matter
exhibits
significant
heterogeneity
and
complexity,
with
varying
pore
structures
across
different
types
influenced
by
multiple
interacting
factors.
This
paper
introduces
a
“two
categories,
six
subcategories”
classification
scheme
based
on
morphological
observations
using
combination
of
argon
ion
polishing
scanning
electron
microscopy
(SEM).
is
classified
into
two
main
categories:
depositional
organic
migrated
matter,
whether
migration
has
occurred.
Depositional
further
subdivided
three
microscopic
characteristics:
bioclasts,
compacted
kerogen,
in
situ
remnants
from
post-hydrocarbon
generation.
Migrated
categorized
types:
intragranular
pores,
intergranular
bitumen
microfractures.
Bioclasts
can
be
alginite,
zooclasts,
acritarchs,
encapsulated
maceral
type.
Zooclasts,
kerogen—types
matter—have
few
or
no
pores.
primarily
related
to
the
nature
hydrocarbon-generating
precursor
materials,
kerogen
being
low
thermal
maturity
diagenetic
compaction.
In
contrast,
pores
are
more
developed
generation,
all
forms
largely
due
expulsion
gaseous
hydrocarbons
during
evolution.
The
alginite
reflect
both
original
structural
properties
materials
evolution
process.
stronger
oil-generating
potential
higher
gas-generating
potential,
while
possesses
capability.
Specifically,
enriched
as
well
pore,
exhibit
hydrocarbon-generation
potential.
Journal of Analytical Atomic Spectrometry,
Journal Year:
2024,
Volume and Issue:
39(5), P. 1353 - 1360
Published: Jan. 1, 2024
Boron
is
a
lithophilic
and
biophilic
element.
isotopes
in
sediments
provide
insight
the
Earth's
history.
purified
by
combination
of
cationic
boron-specific
resins,
isotopic
composition
boron
can
be
determined
with
high
accuracy
MC-ICP-MS.
Water Resources Research,
Journal Year:
2025,
Volume and Issue:
61(3)
Published: Feb. 28, 2025
Abstract
Artificial
lakes
(reservoirs)
accumulate
sediment
and
organic
carbon
(OC)
over
time.
We
investigated
sedimentation
processes
in
a
dryland
reservoir
informed
OC
burial
potential
preservation.
Our
study
site,
Elephant
Butte
Reservoir
on
the
Rio
Grande,
New
Mexico,
USA
receives
inflows
from
sediment‐laden,
monsoon‐driven
flash
floods.
Using
field
data,
historical
survey
river
flux
(water,
sediment,
OC)
we
estimated
volumes
rates
within
delta,
bottom,
whole
during
wet
(1980–1988)
dry
(2007–2017/2019)
climate
periods.
During
severe
drought
(2021–2022),
measured
suspended
concentrations
for
characteristic
(seasonal)
phases
of
hydrograph,
monitored
delta
patterns,
observed
outflow
plume
dynamics.
Measured
(mean
=
8,818
mg/l,
median
1,769
mg/l)
frequently
surpassed
hyperpycnal
threshold
(1,000
mg/l),
especially
floods
(maximum
46,718
mg/l).
River
total
content
averaged
5.2%
±
12.2%,
increasing
to
6.3%
10.3%
summer.
Whole
linear
3.1
1.4%
(dry)–4.0
4.2%
(wet)
cm/yr,
with
higher
bottom
(5.0
0.3%
cm/yr)
than
(0.8
1.1%
deposition,
potentially
preserving
OC.
Comparisons
suspension
deposited
indicate
partial
Estimated
is
conditions
(391
43.6%
vs.
82.4
56.4%
g
C/m
2
yr),
suggesting
that
reservoirs
may
be
efficient
sinks
these
