Module 13: Forensic Taphonomy

Question 1

process of fossilization

Answer 1

• taphonomy

Question 2

forensic taphonomy

Answer 2

• after death until its discovery
• postmortem
• study of processes that affect decomposition, preservation, and recovery
• aids in reconstructing events, locating and recovering remains and evidence

Question 3

Key taphonomic processes

Answer 3

• decomposition
• scavenging
• weathering
• burial
• submergence

Question 4

Decomposition

Answer 4

breakdown of organic molecules by physical, chemical, biological agents (temp, moisture, enzyme, bacteria, fungi)

Question 5

What eliminate collagen from bone during decom?

Answer 5

bacteria

Question 6

Bone breakdown caused by chemical equilibrium and loss of organic components tsaka dissolution of mineral components

Answer 6

Bone diagenesis

Question 7

Scavenging

Answer 7

consumptions of remains by animals

Question 8

Consequences of scavenging

Answer 8

• animal bites can superimposed perimortem wounds
• difficulty im victim identification
  -scattering of body parts

Question 9

Weathering

Answer 9

progressive deterioration and destruction of bones due to chemical and mechanical agents over time

Question 10

5 general stages of weathering

Answer 10

stage 1: unweathered
stage 2: fine cracking
stage 3: flaking
stage 4: spalling and deep cracking
stage 5: fragile, falling apart

Question 11

True or False
Time interval does not depend heavily on the environment conditions.

Answer 11

False

Question 12

True or False
Sun bleach the bone

Answer 12

True

Question 13

Description of burial

Answer 13

• reduces exposure to air, sun, and scavengers
• use of embalming stuff
• formation of adipocere
• soil pH affects the decomposition

Question 14

How adipocere formed?

Answer 14

hydrolysis of fat by anaerobic bacteria

Question 15

True or False
Acidic hasten decomposition

Answer 15

False. Slows down

Question 16

Submergence

Answer 16

• water slows down decomposition but hasten algor
• bloating ->float ->exposed
• type of body of water matters
• aquatic scavengerst

Question 17

Taphonomy in FI

Answer 17

PMI estimation through techniques in FE, FB, FA

Question 18

Limitations

Answer 18

• sample size
• reconstruction over long time periods
• minimal human interventions
• localized environments
• no controlled factors
• use of human analogues
• examination changes environment under investigation

Question 18

Challenges of taphonomy in investigations

Answer 18

• postmortem damage limits analyses
• environmental variability and scavenger activity complicate estimation of PMI

Question 19

Ethical Considerations

Answer 19

• respect for the deceased
• cultural sensitivity