Hardy, D.R., R.S. Bradley, and B. Zolitschka, 1996: The climatic signal in
varved sediments from Lake C - 2, northern Ellesmere Island, Canada.
Actual interaction with an issue and some community members came in the form of learning about the Lake Korttajarvi
varve series.
Lightsum is the portion
of varve thickness contributed by mineral matter.
Darksum is taken to be the portion of
varve thickness contributed by organic matter.
A record of climate over the last millennium based on
varved lake sediments from the Canadian High Arctic.
However, there has been much contention over the extent to which NH land reconstructions restricted to non-dendro proxies are affected by the inclusion or exclusion of the Tiljander
varve data.
A more recent relevant paper is Haltia - Hovi et al (2007) A 2000 - year record of solar forcing
on varved lake sediment in eastern Finland.
Do Varves, Tree - Rings, and Radiocarbon Measurements Prove an Old Earth?
We report variations in planktonic foraminifera
from varved sediments off southern California spanning the past 1400 years.
In their «A Comment on «A statistical analysis...»» (PDF), Schmidt, Mann, and Rutherford mention the Lake
Korttajarvi varved sediment (Tiljander) data series twice.
An early use of rhythmites in climate reconstruction was a specific form
called varves and related to annual sedimentary layers in proglacial lakes.
Lamoureux, S.F. and R.S. Bradley, 1996: A late
Holocene varved sediment record of environmental change from northern Ellesmere Island, Canada.
But there is more work to do on the
muddy varves, he concluded.
Limnological and sedimentary processes at Sawtooth Lake, Canadian High Arctic, and their influence on
varve formation.
Even swifter changes could show up in the
clay varves derived from the layers in the mud of lake beds laid down each year by the spring runoff.
In a small lake with a poorly oxygenated bottom, the presence of laterally continuous laminated sediment that includes well - known periodicities in rhythmite thickness is interpreted as representing annually
generated varves that correspond to seasonal variations in sedimentation.
Some sediment cores
show varves, which can be counted for relative age information.
Thanks Steve, it was probably your phrase that I remembered from the earlier posts on Steig, but the decent cove bit came from his rapid response to the
Tijander varve affair, which made him.
If one strays from the fold (e.g. by modifying «
varve series» with «upside - down»), the conversation retreats to the realm of etiquette — snark, justifications for edited and snipped blog comments, and the like.
Carbon - 14 is
Do Varves, Tree - Rings, and Radiocarbon Measurements Prove an Old Earth?
On second thought: even a letter from spurned dendroclim scientists will do — is there a Googleable umbrage letter from the underrepresented dendroclim community, demanding their cores / corals / borehole /
varve data be acknowledged and analyzed, and be part of the club?
Because the muds,
called varves, seem to have a strong signal for the pulse of La Nina events, the team realized that cores taken from them could offer insights into the climate's past - and maybe its future - for this part of the world.