It is unknown if the caldera was always there or if it is a relatively recent feature, and it is possible that it has come and gone throughout Kīlauea's eruptive history; what is known is that it likely formed over several centuries, with its construction estimated to have begun about 500 years ago, and that its present form was finalized by a particularly powerful eruption in 1790.
Based on the spatial pattern of modern erosion rates, we predict that if the incised fluvial valley was formed during interglacial periods only, it has formed over the last approximately 400,000 years.
It gets formed over many years by building little bricks about what behaviors are acceptable and what behaviors are not, and creating an environment that recognizes these good behaviors.
Last week four opposition ministers quit the cabinet just one day after it was formed over the issue.
As for the pinwheel, the team reports that it likewise formed over many millennia, as strong winds pushed apart the dry ice crystals on the surface, much like winds on Earth create sand dunes.
My point is that after observing local Democrats at close hand for years now, I must say the "circular firing squad" (as their Broward County chairman has put it) they formed over this past February's notorious primary is -- yawn -- just par for the course when you know the context.
We studied a collaborative in action and analyzed how it was formed over the course of one-year-long improvement projects.
Since the G-quadruplex monomer is expected to have a biological significance in the HIV-1 promoter, we used native gel analysis to determine how efficiently it is formed over dimers and tetramers, which are intermolecular forms of G-quadruplex that do not require multiple G runs.
Polyoxymethylene (POM) sheets were used as the passive dosing medium to deliver a known starting dissolved aqueous concentration of the congener and also as a passive sampling device to measure the concentration of the PCB dechlorination product as it was formed over time.
In both groups one and two, exposed at less than 2 years of age, follicular architecture formed over 60% of the differentiated component, while in group three, exposed at a mean age of 7.6 years it formed just over 40%.
