uncover stream
Marcus Aris

Marcus Aris

"Marcus specializes in the documentation of lacustrine depositional environments through high-resolution core analysis. He focuses on identifying the ripple marks and cross-bedding that indicate changing water levels over millennia."

20 Articles

Latest from Marcus

Sedimentological Facies Analysis
June 3, 2026
Tiny Bugs and Old Mud: The Clues to Earth's Ancient Weather

By studying ancient pollen and tiny fossilized bugs in lake mud, scientists are reconstructing the history of Earth's water and climate to predict our future.

Finding the Hidden Records in the World Around Us
Ecological Proxies and Palynology
All rights reserved to uncoverstream.com
June 1, 2026
Finding the Hidden Records in the World Around Us

This week, we explore how mud, old coins, and even ancient tree sap keep a record of the past that we're only just starting to read.

The Dirt Burrito: How Old Mud Predicts New Floods
Lacustrine and Fluvial Environments
All rights reserved to uncoverstream.com
May 27, 2026
The Dirt Burrito: How Old Mud Predicts New Floods

Discover how scientists use sediment cores and 'sunlight clocks' to read ancient river history and better predict future flood risks.

The Light in the Sand Dating Our Ancient Water History
Stratigraphic Unconformities and Discordances
All rights reserved to uncoverstream.com
May 23, 2026
The Light in the Sand Dating Our Ancient Water History

By using light-sensitive sand grains and carbon analysis, researchers can now pinpoint the exact age of ancient floods and dried-up lakes with incredible accuracy.

Ecological Proxies and Palynology
May 20, 2026
Tiny Clues in the Mud: What Ancient Lakes Say About the Weather

By studying the microscopic fossils and pollen trapped in ancient lake sediments, scientists are reconstructing the earth's climate history and predicting future environmental shifts.

Finding the Birthday of a Deserted River
Lacustrine and Fluvial Environments
All rights reserved to uncoverstream.com
May 18, 2026
Finding the Birthday of a Deserted River

How do you date a river? Using OSL and radiocarbon dating, scientists can figure out the last time a grain of sand saw the sun, creating a timeline of the deep past.

Reading the Secrets Written in River Mud
Paleo-Flow Dynamics and Morphology
All rights reserved to uncoverstream.com
May 15, 2026
Reading the Secrets Written in River Mud

Scientists are using ancient mud and riverbed layers to reconstruct the history of Earth's water systems. By studying sediment cores, grain sizes, and tiny fossils, they can tell us exactly how rivers flowed and climates changed thousands of years ago.

The Mystery of the Missing Earth Layers
Stratigraphic Unconformities and Discordances
All rights reserved to uncoverstream.com
May 12, 2026
The Mystery of the Missing Earth Layers

Geologists are hunting for 'missing' layers in the earth's history. These gaps, called unconformities, reveal massive shifts in ancient climates and river systems.

The Soil That Remembers the Sun
Sedimentological Facies Analysis
All rights reserved to uncoverstream.com
May 6, 2026
The Soil That Remembers the Sun

Researchers use sand grains as tiny batteries to determine the exact age of ancient water systems, revealing how climate change shifts the earth.

High-Resolution Stratigraphic Analysis Refines Chronological Frameworks of Ancient River Basins
Paleo-Flow Dynamics and Morphology
All rights reserved to uncoverstream.com
May 2, 2026
High-Resolution Stratigraphic Analysis Refines Chronological Frameworks of Ancient River Basins

Researchers are utilizing advanced geochronological dating and high-resolution sediment core analysis to reconstruct ancient fluvial environments and paleo-flow dynamics.

Advances in Lacustrine Stratigraphy Provide High-Resolution Record of Basin Aridification
Stratigraphic Unconformities and Discordances
All rights reserved to uncoverstream.com
April 28, 2026
Advances in Lacustrine Stratigraphy Provide High-Resolution Record of Basin Aridification

High-resolution analysis of lake sediment cores is revealing the history of ancient droughts and aridification cycles, providing new data for climate modeling and water management.

Advanced Geochronological Techniques Refine Chronologies of Ancient River Systems
Stratigraphic Unconformities and Discordances
All rights reserved to uncoverstream.com
April 27, 2026
Advanced Geochronological Techniques Refine Chronologies of Ancient River Systems

Advanced dating methods and high-resolution facies analysis are helping geologists reconstruct the 10,000-year history of river systems, revealing how tectonic and climatic shifts drive river evolution.

Deltaic Stratigraphic Analysis: High-Resolution Core Data Uncovers Ancient Channel Morphologies
Lacustrine and Fluvial Environments
All rights reserved to uncoverstream.com
April 26, 2026
Deltaic Stratigraphic Analysis: High-Resolution Core Data Uncovers Ancient Channel Morphologies

High-resolution sediment core analysis is allowing geologists to reconstruct the ancient channel morphologies and flow dynamics of major river deltas, providing new insights into coastal evolution.

Advanced Stratigraphic Analysis Redefines Ancient Flood Patterns in the Mississippi Basin
Sedimentological Facies Analysis
All rights reserved to uncoverstream.com
April 25, 2026
Advanced Stratigraphic Analysis Redefines Ancient Flood Patterns in the Mississippi Basin

Researchers using high-resolution sediment core analysis and OSL dating have reconstructed 12,000 years of flood history in the Mississippi Basin, revealing that ancient 'mega-floods' were more frequent than previously understood.

Lacustrine Sediment Analysis Reveals Ecological Resilience to Ancient Water Chemistry Changes
Sedimentological Facies Analysis
All rights reserved to uncoverstream.com
April 23, 2026
Lacustrine Sediment Analysis Reveals Ecological Resilience to Ancient Water Chemistry Changes

Detailed analysis of lake sediment cores using fossil proxies and palynology is providing new insights into how ancient aquatic ecosystems responded to dramatic shifts in water chemistry and climate.

Lacustrine Archives: Utilizing Paleohydrological Proxies to Reconstruct Ancient Lake Chemistries and Climates
Paleo-Flow Dynamics and Morphology
All rights reserved to uncoverstream.com
April 16, 2026
Lacustrine Archives: Utilizing Paleohydrological Proxies to Reconstruct Ancient Lake Chemistries and Climates

Sediment cores from ancient lake basins are revealing high-resolution records of past water chemistry and climate through the study of fossil invertebrates, pollen, and varved sediments.

Lacustrine Archives: High-Resolution Sedimentology and the Reconstruction of Ancient Water Chemistries
Paleo-Flow Dynamics and Morphology
All rights reserved to uncoverstream.com
April 15, 2026
Lacustrine Archives: High-Resolution Sedimentology and the Reconstruction of Ancient Water Chemistries

Discover how ancient lake sediments serve as high-resolution archives for reconstructing past water chemistries, climatic shifts, and ecological changes through the Uncover Stream project.

Chronostratigraphy of the Solimoes Formation: Mapping Neogene Unconformities
Geochronological Dating Techniques
All rights reserved to uncoverstream.com
March 31, 2026
Chronostratigraphy of the Solimoes Formation: Mapping Neogene Unconformities

An in-depth look at the stratigraphic analysis of the Solimões Formation, focusing on Neogene unconformities and the use of high-resolution sediment cores to reconstruct ancient Amazonian environments.

Lake Baikal’s Diatom Record: 100,000 Years of Freshwater Ecological Proxies
Ecological Proxies and Palynology
All rights reserved to uncoverstream.com
March 23, 2026
Lake Baikal’s Diatom Record: 100,000 Years of Freshwater Ecological Proxies

Research from the Baikal Drilling Project (BDP-96) reveals how biogenic silica and diatom taxa serve as critical proxies for 100,000 years of paleoclimatic shifts in Siberia.

Green Sahara Dynamics: Fossil Pollen Proxies from the African Humid Period
Ecological Proxies and Palynology
All rights reserved to uncoverstream.com
March 9, 2026
Green Sahara Dynamics: Fossil Pollen Proxies from the African Humid Period

Paleohydrological stratigraphy of the Green Sahara reveals how high-resolution pollen and sediment analysis can reconstruct the transition from desert to savannah during the African Humid Period.

uncover stream