The original version of this article omitted two citations. These papers provide a seminal description of retinal waves (Meister et al., 1991) and their effects on retinogeniculate patterning (Penn et al., 1998). These citations have been added, and the article has now been corrected online.

The authors present a systematic review of elementary school universal school-based (USB) social and emotional learning (SEL) interventions from 2008 through 2020 for two groups of minoritized students in education research and practice: students with disabilities and/or minoritized racial identities. Completed in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses standards, in this review the authors identified 269 studies for inclusion, which reflected 107 USB SEL interventions. Eleven studies explicitly excluded students with disabilities. Studies varied widely in how disability and racial identity were categorized within and across studies and provided limited evidence of effectiveness through the use of subgroup analyses to support meaningful assessment of how students with disabilities and racially minoritized elementary school age students are benefiting from USB SEL interventions. The authors discuss the limitations of findings, education research best practices, and the minimum reporting standards necessary to ensure ability and racially minoritized youth representation in future USB SEL research.

The spatial and temporal distribution of Pliocene to Holocene Colorado River deposits (southwestern USA and northwestern Mexico) form a primary data set that records the evolution of a continental-scale river system and helps to delineate and quantify the magnitude of regional deformation. We focus in particular on the age and distribution of ancestral Colorado River deposits from field observations, geologic mapping, and subsurface studies in the area downstream from Grand Canyon (Arizona, USA). A new 4.73 ± 0.17 Ma age is reported for a basalt that flowed down Grand Wash to near its confluence with the Colorado River at the eastern end of what is now Lake Mead (Arizona and Nevada). That basalt flow, which caps tributary gravels, another previously dated 4.49 ± 0.46 Ma basalt flow that caps Colorado River gravel nearby, and previously dated speleothems (2.17 ± 0.34 and 3.87 ± 0.1 Ma) in western Grand Canyon allow for the calculation of long-term incision rates. Those rates are ∼90 m/Ma in western Grand Canyon and ∼18–64 m/Ma in the eastern Lake Mead area. In western Lake Mead and downstream, the base of 4.5–3.5 Ma ancestral Colorado River deposits, called the Bullhead Alluvium, is generally preserved below river level, suggesting little if any bedrock incision since deposition. Paleoprofiles reconstructed using ancestral river deposits indicate that the lower Colorado River established a smooth profile that has been graded to near sea level since ca. 4.5 Ma. Steady incision rates in western Grand Canyon over the past 0.6–4 Ma also suggest that the lower Colorado River has remained in a quasi–steady state for millions of years with respect to bedrock incision. Differential incision between the lower Colorado River corridor and western Grand Canyon is best explained by differential uplift across the Lake Mead region, as the overall 4.5 Ma profile of the Colorado River remains graded to Pliocene sea level, suggesting little regional subsidence or uplift. Cumulative estimates of ca. 4 Ma offsets across faults in the Lake Mead region are similar in magnitude to the differential incision across the area during the same approximate time frame. This suggests that in the past ∼4 Ma, vertical deformation in the Lake Mead area has been localized along faults, which may be a surficial response to more deep-seated processes. Together these data sets suggest ∼140–370 m of uplift in the past 2–4 Ma across the Lake Mead region.

No abstract