Petrophysical record of evolution of weakly deformed low-porosity limestone revealed by small-angle neutron scattering, neutron diffraction and AMS study

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F18%3A00494331" target="_blank" >RIV/61389005:_____/18:00494331 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985530:_____/18:00494331 RIV/67985831:_____/18:00494331 RIV/68407700:21340/18:00324432

Výsledek na webu

<a href="http://dx.doi.org/10.1093/gji/ggy309" target="_blank" >http://dx.doi.org/10.1093/gji/ggy309</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/gji/ggy309" target="_blank" >10.1093/gji/ggy309</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Petrophysical record of evolution of weakly deformed low-porosity limestone revealed by small-angle neutron scattering, neutron diffraction and AMS study

Popis výsledku v původním jazyce

Rock physical and transport properties are affected by many rock features, such as texture, porosity, pore type, pore's shape preferred orientation and pore fluid. In carbonates, porosity and microstructure are complex issues resulting from a variety of depositional, diagenetic and deformation processes. To be able to correctly interpret physical properties of carbonate rocks, it is advantageous to combine studies of rock structure, texture and pore space. The combination of structural analysis, microstructure characterization and anisotropic physical properties evaluation successfully distinguished records of particular processes that formed complex microstructure of the Middle Devonian limestones of the Prague Synform in the Bohemian Massif. The primary sedimentary record is associated with carbonate bioclasts and lithoclasts marked by accessory minerals that have been recorded by the anisotropy of magnetic susceptibility method. The diagenetic stage consists of oriented authigenic quartz grains recognized by neutron diffraction. The weak calcite crystallographic preferred orientation has been interpreted as a result of vertical maximum compressive stress acting during the static recrystallization at the maximum burial stage. The small- and ultrasmall-angle neutron scattering measurements show that very low porosity (similar to 0.2 per cent) of the studied limestones is formed by preferentially oriented microcracks of 1.8-3.1 mu m in size. Their preferred orientation argues for the origin either during the maximum burial stage or at the latest stages of the first regional folding.

Název v anglickém jazyce

Petrophysical record of evolution of weakly deformed low-porosity limestone revealed by small-angle neutron scattering, neutron diffraction and AMS study

Popis výsledku anglicky

Rock physical and transport properties are affected by many rock features, such as texture, porosity, pore type, pore's shape preferred orientation and pore fluid. In carbonates, porosity and microstructure are complex issues resulting from a variety of depositional, diagenetic and deformation processes. To be able to correctly interpret physical properties of carbonate rocks, it is advantageous to combine studies of rock structure, texture and pore space. The combination of structural analysis, microstructure characterization and anisotropic physical properties evaluation successfully distinguished records of particular processes that formed complex microstructure of the Middle Devonian limestones of the Prague Synform in the Bohemian Massif. The primary sedimentary record is associated with carbonate bioclasts and lithoclasts marked by accessory minerals that have been recorded by the anisotropy of magnetic susceptibility method. The diagenetic stage consists of oriented authigenic quartz grains recognized by neutron diffraction. The weak calcite crystallographic preferred orientation has been interpreted as a result of vertical maximum compressive stress acting during the static recrystallization at the maximum burial stage. The small- and ultrasmall-angle neutron scattering measurements show that very low porosity (similar to 0.2 per cent) of the studied limestones is formed by preferentially oriented microcracks of 1.8-3.1 mu m in size. Their preferred orientation argues for the origin either during the maximum burial stage or at the latest stages of the first regional folding.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Geophysical Journal International

ISSN

0956-540X

e-ISSN

—

Svazek periodika

215

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

14

Strana od-do

895-908

Kód UT WoS článku

000448789900010

EID výsledku v databázi Scopus

2-s2.0-85054833925