Angela L. Coe
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View article: The Fluvial History of Noachis Terra, Mars
The Fluvial History of Noachis Terra, Mars Open
IntroductionNoachis Terra, in Mars’ southern highlands, is a region which is poorly dissected by erosional fluvial landforms[1,2] but which warm/wet climate models of the early Martian climate predict should have experienced high rates of …
View article: Coupled dichotomy retreat and aqueous alteration on Noachian Mars
Coupled dichotomy retreat and aqueous alteration on Noachian Mars Open
The Mawrth Vallis region is a cornerstone in our understanding of the role of liquid water on early Mars [e.g. 1], which is vital for our knowledge of the evolution of terrestrial planets, planetary habitability and the search for life els…
View article: Dichotomy retreat and aqueous alteration on Noachian Mars recorded in highland remnants
Dichotomy retreat and aqueous alteration on Noachian Mars recorded in highland remnants Open
The Mawrth Vallis region is a plateau situated on the highland side of Mars’ hemispheric dichotomy boundary. It has a >200-m-thick phyllosilicate-bearing stratigraphic succession that indicates extensive aqueous alteration between 4.1 Ga a…
View article: What are the experiences of Aboriginal and/or Torres Strait Islander midwifery students and midwives? A scoping review
What are the experiences of Aboriginal and/or Torres Strait Islander midwifery students and midwives? A scoping review Open
Culture, connection and kinship are foundational in providing experiences for Aboriginal and/or Torres Strait Islander midwives and midwifery students that are clinically and academically transformational, culturally safe and promote resil…
View article: A new cockroach (Blattodea, Rhipidoblattinidae) from the Toarcian (Lower Jurassic) of Alderton Hill, Gloucestershire, <scp>UK</scp>, and the earliest likely occurrence of aposematic colouration in cockroaches
A new cockroach (Blattodea, Rhipidoblattinidae) from the Toarcian (Lower Jurassic) of Alderton Hill, Gloucestershire, <span>UK</span>, and the earliest likely occurrence of aposematic colouration in cockroaches Open
We describe the seventh valid species of cockroach, Alderblattina simmsi gen. et sp. nov., from insect‐rich strata recording the Toarcian Oceanic Anoxic Event (T‐OAE). The T‐OAE represents a period of extreme global warming and environment…
View article: The fossil insect assemblage associated with the Toarcian (Lower Jurassic) oceanic anoxic event from Alderton Hill, Gloucestershire, UK
The fossil insect assemblage associated with the Toarcian (Lower Jurassic) oceanic anoxic event from Alderton Hill, Gloucestershire, UK Open
Extreme global warming and environmental changes associated with the Toarcian (Lower Jurassic) Oceanic Anoxic Event (T-OAE, ~ 183 Mya) profoundly impacted marine organisms and terrestrial plants. Despite the exceptionally elevated abundanc…
View article: A new Liassophlebiidae (Odonata: Heterophlebioidea) from strata close to the Triassic-Jurassic boundary in Somerset, UK
A new Liassophlebiidae (Odonata: Heterophlebioidea) from strata close to the Triassic-Jurassic boundary in Somerset, UK Open
Liassophlebiidae is an extinct family of damsel-dragonflies found in Upper Triassic and Lower Jurassic strata of Europe, Asia and Antarctica. Whilst Liassophlebiidae is well represented by Lower Jurassic fossils, their lowest occurrence in…
View article: The Global Stratotype Section and Point (GSSP) for the base of the Kimmeridgian Stage (Jurassic System), at Flodigarry, Staffin Bay, Isle of Skye, Scotland, UK
The Global Stratotype Section and Point (GSSP) for the base of the Kimmeridgian Stage (Jurassic System), at Flodigarry, Staffin Bay, Isle of Skye, Scotland, UK Open
Following voting by the Kimmeridgian Working Group, the International Subcommission on Jurassic Stratigraphy and the International Commission on Stratigraphy, the Global Stratotype Section and Point (GSSP) for the base of the Kimmeridgian …
View article: Mounds in Oxia Planum: The Burial and Exhumation of the ExoMars Rover Landing Site
Mounds in Oxia Planum: The Burial and Exhumation of the ExoMars Rover Landing Site Open
Oxia Planum, the planned landing site of the ExoMars “ Rosalind Franklin ” rover, is a low relief clay‐bearing plain, of which approximately 1% is covered by 396 upstanding isolated landforms (“mounds”). The mounds are continuous with a ci…
View article: Chapter 13 Chronostratigraphy: understanding rocks and time
Chapter 13 Chronostratigraphy: understanding rocks and time Open
These online resources include a duplicate of Table 13.1 outlining the hierarchy of chronostratigraphical units, a tabulated version of Section 13.5.4 from the chapter that outlines the twelve key points for defining a GSSP and the flow ch…
View article: Chapter 8 Sequence stratigraphy: using changes in relative sea-level and sediment supply to divide, correlate and understand the stratigraphical record
Chapter 8 Sequence stratigraphy: using changes in relative sea-level and sediment supply to divide, correlate and understand the stratigraphical record Open
This document contains, for ease of download and use in the field etc., a flow chart for sequence stratigraphical interpretation, the table of sedimentary features to consider when deciding on the best initial approach for a sequence strat…
View article: Morphology, Morphometry and Distribution of Isolated Landforms in Southern Chryse Planitia, Mars
Morphology, Morphometry and Distribution of Isolated Landforms in Southern Chryse Planitia, Mars Open
The margin of Chryse Planitia, Mars, contains >10 5 kilometer‐scale mesas, buttes, and plateaus (“mounds”), many of which are found in and around Oxia Planum, the ExoMars 2022 Rover landing site. Despite this, their origins and evolution a…
View article: Morphology, Morphometry, and Distribution of Isolated Landforms on the Margin of Chryse Planitia, Mars
Morphology, Morphometry, and Distribution of Isolated Landforms on the Margin of Chryse Planitia, Mars Open
IntroductionOxia Planum is a clay-rich plain located on the boundary between Arabia Terra and Chryse Planitia, and will be the landing site of the ExoMars 2022 rover, ‘Rosalind Franklin’. The region is situated between the anci…
View article: Portable X‐Ray Fluorescence Spectroscopy as a Tool for Cyclostratigraphy
Portable X‐Ray Fluorescence Spectroscopy as a Tool for Cyclostratigraphy Open
Cyclostratigraphic studies are used to create relative and high‐resolution time scales for sedimentary successions based on identification of regular cycles in climate proxy data. This method typically requires the construction of long, hi…
View article: Variability in modern pollen rain from moist and wet tropical forest plots in Ghana, West Africa
Variability in modern pollen rain from moist and wet tropical forest plots in Ghana, West Africa Open
How pollen moves within and between ecosystems affects factors such as the genetic structure of populations, how resilient they are to environmental change, and the amount and nature of pollen preserved in the sedimentary record. We set ar…
View article: Ocean Circulation in the Toarcian (Early Jurassic): A Key Control on Deoxygenation and Carbon Burial on the European Shelf
Ocean Circulation in the Toarcian (Early Jurassic): A Key Control on Deoxygenation and Carbon Burial on the European Shelf Open
The Toarcian Oceanic Anoxic Event (T‐OAE, ∼183 Myr) was a long‐lasting episode of ocean deoxygenation during the Early Jurassic. The event is related to a period of global warming and characterized by major perturbations to the hydrologica…
View article: <i>Polylepis</i>woodland dynamics during the last 20,000 years
<i>Polylepis</i>woodland dynamics during the last 20,000 years Open
Aim To determine the palaeoecological influences of climate change and human land use on the spatial distribution patterns of Polylepis woodlands in the Andes. Location Tropical Andes above 2,900 m between 2°S and 18°S of latitude. Methods…
View article: Landscape-scale drivers of glacial ecosystem change in the montane forests of the eastern Andean flank, Ecuador
Landscape-scale drivers of glacial ecosystem change in the montane forests of the eastern Andean flank, Ecuador Open
Understanding the impact of landscape-scale disturbance events during the last glacial period is vital in accurately reconstructing the ecosystem dynamics of montane environments. Here, a sedimentary succession from the tropical montane cl…
View article: The modern pollen–vegetation relationships of a tropical forest–savannah mosaic landscape, Ghana, West Africa
The modern pollen–vegetation relationships of a tropical forest–savannah mosaic landscape, Ghana, West Africa Open
Transitions between forest and savannah vegetation types in fossil pollen records are often poorly understood due to over-production by taxa such as Poaceae and a lack of modern pollen-vegetation studies. Here, modern pollen assemblages fr…
View article: Chemotaxonomy as a tool for interpreting the cryptic diversity of Poaceae pollen
Chemotaxonomy as a tool for interpreting the cryptic diversity of Poaceae pollen Open
The uniform morphology of different species of Poaceae (grass) pollen means that identification to below family level using light microscopy is extremely challenging. Poor taxonomic resolution reduces recoverable information from the grass…
View article: Drivers of ecosystem and climate change in tropical West Africa over the past ∼540 000 years
Drivers of ecosystem and climate change in tropical West Africa over the past ∼540 000 years Open
A paucity of empirical non‐marine data means that uncertainty surrounds the impact of climate change on terrestrial ecosystems in tropical regions beyond the last glacial period. The sedimentary fill of the Bosumtwi impact crater (Ghana) p…
View article: Cyclostratigraphy, orbital tuning and inferred productivity for the type Kimmeridge Clay (Late Jurassic), Southern England
Cyclostratigraphy, orbital tuning and inferred productivity for the type Kimmeridge Clay (Late Jurassic), Southern England Open
Three independently measured variables (magnetic susceptibility, photoelectric factor and total gamma-ray) obtained from throughout the type Kimmeridge Clay Fm in Dorset (Southern England) were used to identify regular metre-scale, sedimen…
View article: Environmental controls on the distribution and diversity of lentic Chironomidae (Insecta: Diptera) across an altitudinal gradient in tropical South America
Environmental controls on the distribution and diversity of lentic Chironomidae (Insecta: Diptera) across an altitudinal gradient in tropical South America Open
To predict the response of aquatic ecosystems to future global climate change, data on the ecology and distribution of keystone groups in freshwater ecosystems are needed. In contrast to mid‐ and high‐latitude zones, such data are scarce a…