Journal of Marine Science and Engineering,
Год журнала:
2023,
Номер
12(1), С. 17 - 17
Опубликована: Дек. 20, 2023
A
fossil
mysticete
was
discovered
along
the
southwestern
coast
of
Spain,
occurring
in
a
block
detached
from
Neogene
deposits
exposed
coastal
cliff
at
locality
Conil
de
la
Frontera
(Cádiz,
Spain).
These
range
Pliocene
to
Pleistocene
age
and
include
shallow-marine,
mixed
carbonate–siliciclastic
sediments,
with
whale
being
found
occurrence
stratigraphic
unconformity
marked
by
Thalassinoides
burrows.
87Sr/86Sr
analyses
on
oyster
shells
associated
skeleton
suggest
an
Early
age,
agreement
lowermost
unit
cropping
out
study
site.
The
studied
cetacean
specimen
consists
articulated,
almost
complete
balaenopteroid
field
dorsal
side
up;
contained
upside-down
block,
however,
it
is
preserved
ventral
disposition.
Bones
exhibit
low
degree
preservation
cortical
bone
tissue,
which
locally
features
shark
bite
marks
Osedax
traces
as
well
abundant
encrustations
barnacles
ostreids.
Two
teeth
were
also
near
skeleton.
have
their
main
histological
features,
even
though
they
microcracks,
dissolution,
substitution
Fe
oxides,
microborings.
Sediment
particles
late
diagenetic
cements
fill
medullary
cavities.
We
propose
that
carcass
experienced
refloating
before
sinking
seafloor
probably
for
some
time
eventually
buried.
Scientific Reports,
Год журнала:
2022,
Номер
12(1)
Опубликована: Авг. 24, 2022
Abstract
The
intensity,
extent,
and
ecosystem-level
impact
of
bioturbation
(i.e.
Agronomic
Revolution)
at
the
dawn
Phanerozoic
is
a
hotly
debated
issue.
Middle
Cambrian
fan-delta
deposits
in
southwestern
Saskatchewan
provide
insights
into
paleoenvironmental
extent
Revolution
marginal-marine
environments.
studied
reveal
that
several
environmental
stressors
had
direct
on
trace-fossil
distribution
intensities
fan
deltas.
Basal
proximal
subaerial
are
characterized
by
very
coarse
grain
size
absence
bioturbation.
Mid-fan
fan-toe
were
formed
under
subaqueous
conditions
rapid
events
between
sedimentation
episodes
when
ameliorated,
providing
evidence
significant
landward
expansion
Revolution.
Transgressive
marine
accumulated
after
abandonment
system
display
high
levels
reflecting
stable
favored
endobenthic
colonization.
presence
intense
both
delta
transgressive
provides
further
support
to
view
biogenic
mixing
high,
provided
reached.
Our
study
underscores
importance
evaluating
sedimentary
facies
changes
assess
factors
prior
making
evolutionary
inferences.
PalZ,
Год журнала:
2022,
Номер
96(2), С. 343 - 354
Опубликована: Янв. 21, 2022
Abstract
A
fragmentary
mandible
from
the
early
Pliocene
of
Vera
Basin
is
here
investigated
to
clarify
its
taxonomic
position.
The
studied
specimen
assigned
Pliorhinus
megarhinus
,
documented
in
Europe
latest
Miocene
mid-Pliocene.
morphometrical
comparison
reveals
that
this
taxon
larger
than
Stephanorhinus
etruscus
and
S.
jeanvireti
but
overlaps
with
Dihoplus
schleiermacheri
.
P.
D.
differ
some
characters
lower
molars,
such
as
length
metalophid
shape
trigonid
occlusal
view,
thus
allowing
new
considerations
on
Spanish
rhinocerotine
record.
According
results
obtained,
three
species
are
at
least
Span
during
Pliocene:
miguelcrusafonti
presence
has
be
verified
confirmed
by
further
evidence.
a
relict
Spain
discarded.
Journal of Iberian Geology,
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 9, 2024
Abstract
The
Cenomanian
(Upper
Cretaceous)
sedimentary
rocks
of
the
External
Prebetic
(Betic
Cordillera)
in
Sierra
de
Montearagón-Carcelén
(SE
Spain)
record
transgression
and
flooding
continental
deposits
subsequent
development
an
inner
shallow
carbonate
platform.
transgressive
surface
is
densely
colonized
by
infaunal
trace-makers
Glossifungites
ichnofacies
(
Gastrochaenolites
),
which
indicate
sediment
starvation
erosion
as
well
colonization
a
firmground.
first
were
thick
calcarenite
bar
(2
to
11
m)
with
large-scale
cross-bedding
pointing
high-energy
environment
Rosselia
Ophiomorpha
)
confirms
loose
sandy
bottom
under
conditions.
overlaying
stratigraphic
succession
characterized
subtidal
laminated
marly
limestones
intertidal
rhizoliths
interpreted
mangrove
swamp
environment.
These
facies
are
organized
shallowing-upwards
sequences.
An
episodic
event
represented
bivalve-rich
representing
shell
lags
disarticulated
valves.
This
could
be
related
climatic
perturbation
evidenced
negative
excursion
δ
13
C
18
O.
successive
sequences
persisted
thanks
subsidence
tectonically
controlled
depocenters
located
south
Montearagón-Carcelén.
differential
subsidence,
increasing
thickness
towards
sector
study,
suggests
activity
listric
faults
that
depocenters.
report
this
very
extensive
developed
close
land
emerged.
Energies,
Год журнала:
2023,
Номер
16(2), С. 804 - 804
Опубликована: Янв. 10, 2023
Seismic,
core,
drilling,
logging,
and
thin-section
data
are
considered
to
analyze
the
reservoir
diversity
in
east,
middle,
west
fan
of
Liushagang
Formation
steep-slope
zone
Weixinan
Sag,
Beibuwan
Basin.
Three
factors
primarily
affect
differences
for
systems:
(1)
Sedimentary
mostly
control
scales
characteristics
drainage
system
microfacies.
Massive
high-quality
reservoirs
have
shallow
burial
depths.
Channel
development
sediment
supply
favor
formation
these
reservoirs.
The
sedimentary
microfacies
suggest
delta
plain
distributary
channels.
(2)
Lithofacies
types
evolution.
diagenesis
is
weak,
a
weak
compaction–cementation
diagenetic
facies
medium
compaction–dissolution
were
developed.
(3)
Sandstone
thickness
oil-bearing
properties
average
porosity
permeability
large,
critical
sandstone
small,
capacity
high.
Furthermore,
prediction
models
summarized
as
nearshore
subaqueous
models.
model
plain,
lithology
medium–coarse
sandstone.
organic
acid
+
meteoric
freshwater
two-stage
dissolution
developed,
various
dissolved
pores
formed,
Type
I
middle
fan,
medium–fine
Only
dissolution,
pores,
I–II
Regarding
models,
large-scale,
channel
Weak
evolution,
good
physical
properties,
thick
sandstone,
developed
reservoir.
study
northern
was
undertaken
order
guide
predictions.
Further,
it
provides
reference
distribution
system.
Estudios Geológicos,
Год журнала:
2021,
Номер
77(1), С. e136 - e136
Опубликована: Май 11, 2021
El
primer
registro
de
un
proboscídeo
en
el
sector
oriental
la
Cuenca
del
Guadalquivir
se
ha
localizado
los
abanicos
aluviales
desarrollados
durante
una
etapa
intensa
erosión
nuevos
relieves
frente
montañoso
más
externo
Cordillera
Bética.
fósil
estudiado
es
fragmento
defensa
74
cm
longitud
que
fue
transportado
por
las
corrientes
alimentaban
abanico
deltaico
Pleistoceno
medio.
Este
resto
encuentra
dentro
unos
depósitos
detríticos
alta
energía
varían
entre
tamaño
arena
gruesa
y
bloques.
revestido
costra
carbonatada
laminada
espesor
inferior
a
2
cm.
análisis
detallado
esta
permitido
identificar
estructuras
asignables
briofitas
fósiles.
Por
lo
tanto,
interpreta
recubierta
casi
completamente
musgo
experimentó
cementación
temprana.
Posiblemente
formación
favoreció
preservara.
Un
posterior
enterramiento
rápido
también
debió
favorecer
preservación.
líneas
Schreger
superficies
fractura
asignar
especie
elefante
Palaeoloxodon
cf.
antiquus.
ejemplar
poblaciones
occidental
Guadix-Baza.
No
descarta
posibilidad
existieran
migraciones
estacionales
P.
antiquus
tierras
bajas
menos
200
m
altura
sobre
nivel
mar,
altiplano
Guadix-Baza,
encima
900
altura.
Research Square (Research Square),
Год журнала:
2023,
Номер
unknown
Опубликована: Дек. 8, 2023
Abstract
Lithospheric
delamination
involves
short-lived
crustal
and
surface
responses,
alkaline
magmatism,
high
heat
flow
extension.
In
the
Western
Mediterranean,
is
thought
to
have
triggered
uplift
at
origin
of
Messinian
Salinity
Crisis
(MSC).
This
scenario
questioned
by
insufficient
temporal
resolution
relative
other
proposed
mechanisms
that
include
shortening
slab
detachment.
Here,
we
report
new
U-Pb
ages
clumped
isotope
analyses
from
calcite
veins
formed
in
an
intramontane
basin
eastern
Betics.
They
reveal
a
fluid
event
8.5
5
Ma
linked
extension
retreating
delamination.
The
end
coincides
with
onset
4.5-3
across
boundary
between
Cabo
de
Gata
arc
basement
Iberia
margin.
Our
results
MSC
was
established
before
while
underway.
therefore
product
long-lived
lithospheric
thinning
evolution
calc-alkaline
high-alkaline
magmatism
during
After
MSC,
around
Ma,
detachment
formation
plate
fault
tectonic
escape
Africa
Iberia.
