At the Earth's surface, calcium (Ca) is a critical element at a variety of scales: it is soluble in
natural waters, a biological nutrient, and a major constituent of the dominant mineral sink for …

Shallow-water carbonate sediments constitute the bulk of sedimentary carbonates in the
geologic record and are widely used archives of Earth's chemical and climatic history. One …

The nine editions of Stable Isotope Geochemistry have appeared over a time span of nearly
50 years. The first edition (1973) appeared as a slim book of 135 pages. Due to the rapid …

Weathering of uplifted continental rocks consumes carbon dioxide and transports cations to
the oceans, thereby playing a critical role in controlling both seawater chemistry and climate …

Global ice volume (sea level) and deep‐sea temperature are key measures of Earth's
climatic state. We synthesize evidence for multi‐centennial to millennial ice‐volume and …

The mineral barite (BaSO4) can precipitate in a variety of oceanic settings: in the water
column, on the sea floor and within marine sediments. The geological setting where barite …

The carbon dioxide (CO2) content of the atmosphere has varied cyclically between~ 180
and~ 280 parts per million by volume over the past 800,000 years, closely coupled with …

The development of environmentally friendly plastics is critical to ensure sustainable
development. In contrast to polymer plastics derived from petrochemicals, inorganic …

Calcium-isotope ratios (δ44/42Ca) were measured in carbonate-rich sedimentary sections
deposited during Oceanic Anoxic Events 1a (Early Aptian) and 2 (Cenomanian–Turonian) …

We report high-precision 44Ca/40Ca measurements (2σm< 0.06‰) of Hawaiian shield
stage tholeiites. Our data reveal∼ 0.3‰ variation in their 44Ca/40Ca, which comprises∼ …