GEO GIRL Courses

Geologic Time and Dating Rocks Without Isotopes - Biostratigraphy and Lithostratigraphy

Explore geological dating methods beyond isotopes, including biostratigraphy and lithostratigraphy. Learn how fossils and rock types help construct the geologic timescale and correlate rocks globally.

• YouTube
• 28 minutes
• On-Demand
• Free Video

Mass Extinction Causes Nobody Talks About - GEO GIRL

Explore lesser-known mass extinction causes, from SO2-induced cooling to gamma ray bursts. Learn how various factors trigger devastating events and impact Earth's biodiversity throughout history.

• YouTube
• 24 minutes
• On-Demand
• Free Video

Mass Extinction Events from the Precambrian to Mid-Paleozoic That Nobody Talks About

Explore lesser-known mass extinctions from the Precambrian to Mid-Paleozoic eras, including the Oxygen Catastrophe and early Cambrian events, rivaling the 'Big 5' in ecological impact and species loss.

• YouTube
• 20 minutes
• On-Demand
• Free Video

Classification of Clastic Sedimentary Rocks Based on Grain Size - Sed Strat - GEO GIRL

Comprehensive guide to classifying clastic sedimentary rocks by grain size, covering sediment classes, rock types, and the impact of transport and diagenesis on grain characteristics and rock properties.

• YouTube
• 20 minutes
• On-Demand
• Free Video

Life in Oxic, Suboxic, and Anoxic Sediments - Yes, Some Life Doesn't Require Oxygen!

Explore microbial life in sediment layers, from oxygen-rich to oxygen-free zones. Learn about diverse metabolic processes and their impact on organic matter decomposition in marine and freshwater environments.

• YouTube
• 29 minutes
• On-Demand
• Free Video

Composition, Texture, and Classification of Sedimentary Rocks - Sed Strat 1

Explore sedimentary rock formation, classification, and characteristics. Learn about clastic, chemical, and biogenic types, textures, structures, and diagenesis effects on rock properties.

• YouTube
• 24 minutes
• On-Demand
• Free Video

Organic Carbon Burial and Diagenesis - How Much Organic Carbon Is Actually Preserved?

Explore organic carbon burial and diagenesis in marine sediments, from production to preservation. Learn about microbial degradation, sediment reactions, and the surprisingly small fraction of carbon ultimately preserved.

• YouTube
• 27 minutes
• On-Demand
• Free Video

Where and How Microbial Mats Form, Types of Mats, and Biosedimentary Structures - GEO GIRL

Explore microbial mats: formation, types, and biosedimentary structures. Learn about their unique layering, environments, and preservation in geological records.

• YouTube
• 26 minutes
• On-Demand
• Free Video

Bioleaching - Mineral-Dissolving Bacteria Help Us Obtain Valuable Metals but Produce AMD

Explore microbial metal oxidation, bioleaching techniques, and environmental impacts of biomining. Learn about acid mine drainage, heap leaching, and biooxidation for extracting valuable metals like gold.

• YouTube
• 24 minutes
• On-Demand
• Free Video

How We Deduce Mantle Composition and Structure From Basalts - Igneous Petrology - GEO GIRL

Explore basalt types, mantle composition, and Earth's structure through igneous petrology. Learn how basalts reveal insights into mantle processes and magma generation environments.

• YouTube
• 21 minutes
• On-Demand
• Free Video

Stable and Radiogenic Isotopes in Igneous Petrology - Geochronology and Isotope Tracers

Comprehensive overview of stable and radiogenic isotopes in igneous petrology, covering fractionation, dating methods, and applications in determining magma sources and temperatures.

• YouTube
• 26 minutes
• On-Demand
• Free Video

Modal vs Norm Mineralogy, Major vs Trace Elements, and Indices - Igneous Petrology

Comprehensive overview of igneous petrology concepts, including mineralogy types, element behavior, analytical diagrams, and geochemical indices. Explores trace elements and partition coefficients in rock formation.

• YouTube
• 22 minutes
• On-Demand
• Free Video

Magma Viscosity, Volatile Content, Partial Melting, and Mixing - Igneous Petrology

Explore magma properties, volcanic eruptions, and igneous processes. Learn about viscosity, volatiles, partial melting, and magma mixing to understand the factors influencing volcanic activity and rock formation.

• YouTube
• 24 minutes
• On-Demand
• Free Video

Is Europa Geologically Active? - Europa's Surface Features & Geology - Astrobiology

Explore Europa's geology, surface features, and potential for life. Discover evidence of geologic activity and its implications for the icy moon's subsurface ocean and habitability.

• YouTube
• 25 minutes
• On-Demand
• Free Video

Phase Diagrams - Minerals Melt at Different Temperatures - Igneous Petrology

Explore phase diagrams in igneous petrology to understand mineral melting and crystallization. Learn to predict mineral formation from melts and melt composition from minerals at various temperatures.

• YouTube
• 25 minutes
• On-Demand
• Free Video