Please enable JavaScript.
Coggle requires JavaScript to display documents.
4.2.1 - Coggle Diagram
4.2.1
Geological Evidence
explanation
geological timescale
scientific model to represent the course of changes in geological and fossil deposits
links these to evolutionary changes in ecosystems
description
the gathering and analysing of forensic evidence at a scene
allows a reconstruction of a timeline of evidence
improves the scientists ability to infer cause and effect
example
banded iron formations
form of geochemical evidence
found in Australia and other continents
geological formations consisting of alternating bands of iron-rich and iron-poor sediment
how it forms
photosynthetic organisms were making oxygen
reacted with the iron dissolved in seawater
to form iron oxide minerals n the ocean floor
creating ban iron formations
Aboriginal Rock Painting
description
record details & impressions of surroundings
how they lived
climate
animals & plants they interact with
spiritual beliefs
example
Bradshaw paintings dated 40 000 yrs old
in the paintings the area consists of lush open tropical forests
increase it wetlands may explain increase of reptile deptictions
explanation
give clues on
how and why people arrived in the area
enviroments at the time
how they lived and adjusted to climate changes & landsacpes
effect of climate change on local flora & fauna
use accurate dating methods to give dates for paintings
uranium/thorium dating can be used to determine how they are formed
hence roughly when the paintings were created
Ice Core Drilling
description
explanation
example