This document discusses sedimentology and contains definitions, observations, and descriptions of sedimentary features. Key points include: 1. Sediment texture and internal structure can be influenced by bioturbation and bioerosion at various scales, providing a record of original conditions and subsequent biological activity. 2. Observations are made of degree of bioturbation, ichnofauna diversity, burrow organization, lithology, and sedimentary structures. 3. Settings described include a tidal channel with variable bioturbation and ichnofauna including Planolites, Macaronichnus, Ophiomorpha, and Thalassinoides, an inner shelf with intensely bioturbated muddy heterolith

1. Sedimentology 2/1

2. Sedimentology 2/2
“Those aspects of the sediment's texture and internal
structure that arise from bioturbation and bio-erosion at all
scales" (Ekdale & Bromley 1983).
“A record of the primary sedimentary conditions, original
animal community, and subsequent history of one or more
phases of biogenic activity” (Taylor & Goldring 1993).
Definitions

3. Sedimentology 2/3
_ 3.41
_ 1.64
_ 2.35
_ 0.21
_ 0.75
_ 2.81
_ 1.81
Log K
Permeability map
Thin section
Core
Microporous nodular limestones

4. Sedimentology 2/4
•Degree of bioturbation
•Ichnofauna
•Diversity
•Burrow organisation
•Tiering
•Lithology
•Sedimentary structures
Observations

5. Sedimentology 2/5
Cross-beds, clay-draped
foresets, bidirectional,
thick bottomsets, flaser
bedded.
Variable bioturbation,
moderate diversity.
Planolites
Macaronichnus
Ophiomorpha
Thalassinoides
Palaeophycus
Tidal channel

6. Sedimentology 2/6
Muddy heterolithics.
Intensely bioturbated,
high diversity.
Phycosiphon
Teichichnus
Planolites
Chondrites
Rhizocorallium
Inner shelf

7. Sedimentology 2/7
Bioturbated mudstone.
Laminated mudstone.
Sparsely bioturbated, low
diversity.
Phycosiphon
Thalassinoides
Intensely bioturbated,
moderate diversity.
Phycosiphon
Chondrites
Planolites
Outer shelf