Here are a few references I'd like to present. Excuse the length of posting.
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Solar Variance

Source NASA
While the visible light from the Sun remains constant, matter and invisible radiation are highly variable. This solar variability is associated with sunspots, solar flares, and coronal holes. We measure the increase in matter and energy that streams toward Earth using instruments on rockets, satellites, and at Earth's surface. Periods of high solar activity are of special interest to scientists and engineers involved in satellite design, space station construction, and space shuttle missions.
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Source Rice University

Solar Mechanisms of Global Climate Change

...solar activity has a strong effect on interplanetary space. It is hardly surprising, then, that changes in the sun can drastically affect Earth's climate. Though the climactic changes are not the focus of this project, it should be noted that solar variations can account for the climate change during the Maunder minimum. Two main theories have been proposed: a link between galactic cosmic rays and cloud formation and a long-term variation of solar irradiance. These are discussed below. However, it should be kept in mind that Earth's climate is the paradigm system for chaos theory; any theory requires extensive approximation and computer modelling.

GCR and cloud formation
...These changes in interplanetary space can directly affect Earth's climate. In particular, galactic cosmic rays have been implicated in cloud formation on Earth. Though no explanation has been proposed for exactly how increased GCR flux leads to increased cloud cover, the correllation is extremely strong (R=.83) 7. Significant increases in cloud cover would decrease the total amount of energy reaching Earth, decreasing the Earth's temperature.

Solar Irradiance Variations

A great deal of research has been put into understanding both the variations in the solar constant and the effect on the Earth's climate. For the first, roughly a dozen upper atmosphere and space instruments have been launched since 1980. The solar irradiance has been found to vary on a wide variety of timescales, from minutes to the 11-year solar activity cycle. It has even been postulated that the solar irradiance varies on a time scale of centuries or millenia, though the evidence for this is still controversial. The strongest correllation is with the 11-year cycle. When the sun is at a minimum in its cycle, the solar irradiance is lowest 8. This suggests that, during a great minimum like the Maunder minimum, solar irradiance should decrease. Numerous studies have shown that the solar irradiance was between .1% and 1% lower during the Maunder minimum using a wide variety of techniques. (See, for example, Bhatnagar et. al 9).
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Source Christian Science Monitor

Because the sun is the ultimate source of Earth's warmth, some researchers have looked to it for an answer. In the 1970s, solar researcher John Eddy, now at Saginaw Valley State University in Michigan, noticed the correlation of sunspot numbers with major ups and downs in Earth's climate. For example, he found that a period of low activity from 1645 to 1715, called the Maunder Minimum, matched perfectly one of the coldest spells of the Little Ice Age.

Judith Lean, a solar physicist at the Naval Research Laboratory in Washington, estimates that the sun may have been about a quarter of 1 percent dimmer during the Maunder Minimum. This may not sound like much, but the sun's energy output is so immense that 0.25 percent amount to a lot of missing sunshine -- enough to cause most of the temperature drop, she says.
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Source National Acadamy of Science

The development and calibration of a solar-output model for climate are supported by geophysical, archaeological, and historical evidence from the last full glacial Pleistocene (30,000 years BP) through the current Holocene interglacial to the present. The solar-output model is based on a superposition of a fundamental harmonic progression of cycles beginning at 10 and 12 years and progressing to the 13th harmonic (90,000-year cycle), which is approximately equal to the average continental glacial cycle. This model was date calibrated to the Pleistocene/Holocene boundary at 9,000 years BP and compared with geophysical records of sea level, carbon-14 production, oxygen 16/18 ratios, and other geologic evidence of climate fluctuations. The approximate 1,300-year little-ice-age cycle and intervening warmer periods agree with archaeological and historical evidence of these cold and warm periods. Throughout history, global warming has brought prosperity whereas global cooling has brought adversity.

The solar-output model allows speculation on global climatic variations in the next 10,000 years. Extrapolation of the solar-output model shows a return to little-ice-age conditions by A.D. 2400-2900 followed by a rapid return to altithermal conditions during the middle of the third millennium A.D. This altithermal period may be similar to the Holocene Maximum that began nearly 3,800 years ago. The solar output model suggests that, approximately 20,000 years after it began, the current interglacial period may come to an end and another glacial period may begin.
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Mammoths********

Source: don-lindsay-archive.org

Less than fifty frozen animals have been found. Most were pretty decayed, and only a few were whole. They all have different carbon dates, spread across the last 50,000 years. These are unrelated deaths that happened to result in burials.

 "Lapparent attributes the extinction of the mammoth to a gradual increase in cold and a decrease in the supply of food, rather than to a cataclysmic flood." (Guthrie 1990)
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Iceland******

Source platetectonics.com

Iceland is part of the Mid-Atlantic Ridge that owes its very existence to the molten rock, or magma, that wells up through the rifts along the ridge. Scientists believe Iceland rose from the sea floor about 20 million years ago. Continuous spreading, accompanied by eruptions along Iceland's section of the ridge, widens the country by about one inch per year.

Over one third of Iceland's 40,000 square miles is volcanically active and loaded with lava fields. Elsewhere, magma too far below the surface to create volcanoes heats the rock above, sending the heated groundwater percolating to the surface in the form of "hot springs." Iceland is far enough north so that it should be entirely covered by ice and snow, like Greenland to the west. The heat generated by the ridge, however, keeps the country in a constant state of thaw, distinguishing it as the Land of Fire and Ice.
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