| 1. | Such mineralogical changes might equally be considered to be biostratinomic as diagenetic.
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| 2. | The mineral occurs as interstitial grains in sandstone formed under diagenetic conditions.
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| 3. | Later researchers have offered other explanations, from diagenetic gas bubbles to burrow traces.
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| 4. | The chalk nodules which apparently replaced chalk and infilled pore spaces early in the diagenetic history.
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| 5. | In sediments it occurs as authigenic, diagenetic minerals and as a product of hydrothermal deposition.
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| 6. | The changes that occur during this diagenetic phase mainly relate to the reworking of the sediments.
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| 7. | This causes the taphonomic or diagenetic obliteration of fossils, producing gaps and condensation of the record.
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| 8. | Foliation may be formed by realignment of micas and diagenetic metamorphism and low-grade burial metamorphism.
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| 9. | The general conditions leading to post-diagenetic alteration have been described by M�cke ( 1994 ).
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| 10. | Porosity is controlled by : rock type, pore distribution, cementation, diagenetic history and composition.
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