However, these areas of very young crust represent only a tiny fraction of the ocean floor; the vast majority of the crust is millions of years old, and no one knew how microbe-friendly it was.
This would be consistent with an abundant release of fluids related to the dehydration process of a young crust, whereas the fast subduction of an old lithosphere does not promote fluid accumulation, leading to low seismic attenuation.
The CO2 contents in the young crusts (< 13.6 Ma) with penetration depth of > 200 m (Holes 369B, 896A, and 504B) are lower than 1 wt% (Gillis and Coogan 2011; Alt and Teagle 1999) (Fig. 7a).
The second (Southern) domain consists of Neoproterozoic and younger crust of the amalgamated Peninsular-Wrangellia-Alexander arc terrane and its paired Mesozoic accretionary prism facing the Pacific Ocean basin.
Province I (the youngest crust, Nd model ages (TDM) = 0.8 0.2 Ga) is a remarkable region of Phanerozoic crustal growth, which may reflect a major zone for closures of the Paleo-Asian Ocean.
High ɛNd values, representing to more erosion of primitive, younger crust (e.g., DePaolo and Wasserburg 1976), are found mainly in the samples from the Jinshajiang, which have low 87Sr/86Sr ratios.
The CO2 content in the Jurassic/Cretaceous crusts is generally higher than that of younger crusts.
In the Phanerozoic, the content of CO2 as carbonate in the Jurassic/Cretaceous crusts is generally higher than that of younger crusts (Fig. 7a).
In contrast, Jurassic and Cretaceous crusts with penetration depths of > 200 m (Holes 801C, 417A, 417D, and 418A) have higher CO2 contents, up to 4.2 wt.%, than the younger crusts.
When she is not scouting out fabrics or decorating the houses of New York's young upper crust, Ms. Hampton, a daughter of the legendary decorator Mark Hampton, plans to fill that provocative void with an image from the Parthenon -- one that she will paint herself.
Britain's young upper crust today are well groomed, and although they might occasionally cultivate a deliberately dishevelled look, they would avoid looking thoroughly unkempt.
