Marble Start the Clock The Question This document asks one narrow question: when scientists reproduce the structural processes associated with marble under controlled laboratory conditions, how long do those processes take? Marble is a metamorphic carbonate rock, commonly produced by recrystallization of limestone or dolostone. For this investigation, that definition is enough. The issue here…

Granite Start the Clock The Question This document asks the same narrow question asked of marble in Domain 10A: when scientists reproduce processes involved in producing granitic crystalline material under controlled laboratory conditions, how long do those processes take? Granite is a crystalline igneous rock composed principally of quartz and feldspars with additional minerals. For…

What The Laboratory Actually Establishes Two Stones Two Laboratory Clocks Domain 10 asked a narrow question. Can important processes used to explain the formation and transformation of marble and granite be reproduced experimentally, and if so, how long do they take? The answer is yes. For marble, measurable carbonate deformation, recrystallization-related change, and high-pressure mineral…

…And Its Bilateral Dance Is Essential What Geological Time Looks Like When the LaboratoryGets the Clock The Laboratory Has a Stopwatch Geology has an enormous clock. The laboratory has a stopwatch. They are not automatically measuring the same thing. Across Pressure Is of the Essence, natural materials carrying histories measured in millions and billions of…