This is a title slide titled "Evolution of Earth." The subtitle outlines 4.54 billion years of key events, including formation, eons, life origins, and continental drift.

Evolution of Earth

4.54 Billion Years: Formation, Eons, Life Origins, Continental Drift

Source: User query

This agenda slide outlines a presentation on Earth's history, starting with its formation through accretion, cooling, and early crust development. It then covers geological eons, the origin of life, continental drift via plate tectonics, and major geological/biological events with timelines and conclusions.

Presentation Agenda

1. Earth's Formation

Stages of accretion, cooling, and early crust development.

2. Geological Eons

Overview of Hadean, Archean, Proterozoic, and Phanerozoic.

3. Origin of Life

Emergence of first microbes and early biological evolution.

4. Continental Drift

Plate tectonics theory and Pangea supercontinent cycles.

5. Major Events

Key geological, biological milestones, timeline, stats, conclusion. Source: Evolution of Earth: stages of Earth's formation, Hadean, Archean, Proterozoic, and Phanerozoic eons, origin of life, continental drift, and major geological and biological events

The slide outlines the key stages of Earth's formation, beginning with accretion from the solar nebula around 4.54 billion years ago. It then details the intense Late Heavy Bombardment, differentiation into core, mantle, and crust, followed by cooling and the formation of early oceans.

Stages of Earth's Formation

• Accretion from solar nebula ~4.54 Ga
• Intense Late Heavy Bombardment
• Differentiation into core, mantle, crust
• Cooling and early oceans form

This section header slide is titled "The Four Eons." Its subtitle provides an overview of the Hadean, Archean, Proterozoic, and Phanerozoic Eons.

The Four Eons

The Four Eons

Overview of Hadean, Archean, Proterozoic, and Phanerozoic Eons

The Geological Timeline slide outlines Earth's history across four eons, from the Hadean (4.6-4 Ga) molten surface and meteor bombardment to the present. It covers Archean (4-2.5 Ga) first life and continents, Proterozoic (2.5-0.54 Ga) oxygen rise, and Phanerozoic (0.54 Ga-Present) complex life explosion.

Geological Timeline

4.6-4 Ga: Hadean Eon: Molten Surface Earth accretes as a molten body with intense meteor bombardment. 4-2.5 Ga: Archean Eon: First Life Emergence of microbial life and early continent formation. 2.5-0.54 Ga: Proterozoic Eon: Oxygen Rise Great Oxidation Event dramatically increases atmospheric oxygen. 0.54 Ga-Present: Phanerozoic Eon: Complex Life Explosion of multicellular life, continental drift, and biodiversity.

The slide "Origin of Life" notes that life emerged over 3.7 billion years ago, with stromatolites as the earliest evidence. It discusses the possible RNA world hypothesis and evolution from microbes to eukaryotes.

Origin of Life

!Image

• Life emerged >3.7 billion years ago
• Possible RNA world hypothesis
• Earliest evidence: stromatolites
• Evolved from microbes to eukaryotes

Source: Wikipedia

Pangaea formed around 335 million years ago and broke apart 175 million years ago due to plate tectonics, shaping modern continents. The slide also lists key events: Cambrian Explosion (~541 Ma) for rapid life diversification, dinosaur extinction (~66 Ma) from an asteroid, and human evolution from early hominins (~6-7 Ma) to Homo sapiens (~300,000 years ago).

Continental Drift & Major Events

The "Key Facts & Stats" slide outlines Earth's age at 4.54 billion years, the emergence of life over 3.7 billion years ago, and oxygen atmosphere formation around 2.4 billion years ago. It also highlights five major mass extinction events.

Key Facts & Stats

• 4.54B: Earth's Age

years old

• >3.7B: Life Began

years ago

• ~2.4B: O2 Atmosphere

formed years ago

• 5: Mass Extinctions

major events

The conclusion slide highlights Earth's 4.5-billion-year evolution from molten rock to rich biodiversity, emphasizing how life thrives amid change. Its subtitle urges viewers: "Life Endures. Explore Earth's dynamic history further!"

Conclusion

Earth's 4.5B-year journey from molten rock to biodiversity showcases evolution's power. Life thrives through change.

Life Endures. Explore Earth's dynamic history further!

Source: Evolution of Earth