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Ω project based on Franceschi's EPSL (platform size (syndepotional…
Ω project
based on Franceschi's EPSL
platform size
syndepotional fabrics volume
timeline - chemostratigraphy correlation - Brian's work on Satellite image - Dan's early work on geochronology to define the boundary between T1/T2
boundaries/contacts between facies belt (have to estimate from Brian's work and apply to the whole platform (Franceschi's paper also estimate it based on the 3D model)
types of syndepositional fabrics: point-counting data - Jon's Phd data - allomicrite, early marine cements, late-state cements, microbialite, skeletal grains, voids and Leane's point-counting data (limit - not separate early marine cements from late-stage cements)
Jon's phd data does not have Spathian platform interior;
if so, how Leanne calculated the point-counting data for platform interior of the Spathian
what the first-order vertical growth rate: section thickness divided by time
ignore post-depositonal fabrics, what are the relationship between log(omega-1) and log production
physical compaction - not included in Franceschi's EPSL (2016) paper - page 220 lowerleft corner
chemical dissolution - stylolites: approximately 4% - Franceschi's EPSL (2016) - page 220 lowerleft corner
sediment transport to the basin - circular rim, distance 2.5 km, average thickness
productive surface to convert carbonate volumes into a precipitation rate expressed as G (kgm/yrm2)
其实最后估计出来的precipitation rate是可以同自己modeling paper的结果结合起来的，omega-calcite and omega-aragonite
Franceschi (2016, EPSL) does not directly calculate omega from precipicatation rate of the platform, but we might be able to his linear equation y=1.82x-0.29 in figure 6 on page 222
and then compare to liz trower's oolite approach
Fig. 6B the linear best-fit y=1.82x-0.29, R square = 0.5226,
based on latemar and modern coral reefs
根据95% confidence bounds反推早三叠世Ω的
值
What if I do not care about the syn- and post-depositional
fabrics, only estimate the total volume of carbonate platform
only estimate the MPR based on the section thickness - maximum subsidence
对比lizz trower的研究结果
need to calculate convert from omega-calcite to omega-aragonite
from Ridgwell (2005)
uncertainty, particularly in Xiliang area
simplified estimation (just generate some preliminary results)
later 3D model - surface area (ImageJ)
important for understanding C cycle
important for understanding platform architecture in anoxia -
sedimentology modeling paper: platform-scale saturation state vs local ooids scale saturation state
--- probably need to plot Fig. 1 of Bosscher and Schlager (1993, Journal of Geology) by adding new platforms, also take a look at Kemp and Sadler (2014, Sedimentology)
Riding also did some simulations, but attentions on their assumptions are needed
dynamic model is correct
ooids may spend much of their lifetime near an eqilibrium size
so could directly use the size of ooids to be approximated as equilibrium size from the intermediate sized ooids