┌───────────────────────────┐ │ DIAGENETIC ENVIRONMENTS │ └─────────────┬─────────────┘ │ ┌────────────────────────┼────────────────────────┐ ▼ ▼ ▼ ┌─────────────────┐ ┌─────────────────┐ ┌─────────────────┐ │ METEORIC │ │ MARINE │ │ DEEP BURIAL │ ├─────────────────┤ ├─────────────────┤ ├─────────────────┤ │ • Fresh water │ │ • Marine fluids │ │ • High pressure │ │ • Dissolution │ │ • Cementation │ │ • Compaction │ │ • Lithification │ │ • Micritization │ │ • Stylolites │ └─────────────────┘ └─────────────────┘ └─────────────────┘ The Dolomite Problem
The fossils within carbonate rocks reveal the evolution of life. origin of carbonate sedimentary rocks pdf extra quality
Dolomite rarely precipitates directly from modern seawater due to kinetic barriers caused by hydration cells around magnesium ions. Most regional dolomite forms via secondary replacement: They form in shallow, agitated, hypersaline, or warm
Spherical grains featuring concentric coatings of aragonite or calcite. They form in shallow, agitated, hypersaline, or warm tropical waters via physical rolling and localized degasification of CO2CO sub 2 They form in shallow
Organisms actively extract calcium and bicarbonate ions from seawater to build protective shells and skeletons.